diff --git a/Cargo.lock b/Cargo.lock
index 1f34062f1..6a342f077 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,6 +2,279 @@
 # It is not intended for manual editing.
 version = 3
 
+[[package]]
+name = "actix-codec"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "78d1833b3838dbe990df0f1f87baf640cf6146e898166afe401839d1b001e570"
+dependencies = [
+ "bitflags",
+ "bytes 0.5.6",
+ "futures-core",
+ "futures-sink",
+ "log",
+ "pin-project 0.4.29",
+ "tokio 0.2.25",
+ "tokio-util 0.3.1",
+]
+
+[[package]]
+name = "actix-connect"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "177837a10863f15ba8d3ae3ec12fac1099099529ed20083a27fdfe247381d0dc"
+dependencies = [
+ "actix-codec",
+ "actix-rt",
+ "actix-service",
+ "actix-utils",
+ "derive_more",
+ "either",
+ "futures-util",
+ "http",
+ "log",
+ "trust-dns-proto",
+ "trust-dns-resolver",
+]
+
+[[package]]
+name = "actix-governor"
+version = "0.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dff68e30e5839d33afc5f3567e31a89cbfb04877b1629af41a6665fa3d60f1e5"
+dependencies = [
+ "actix-web",
+ "futures",
+ "governor",
+ "log",
+]
+
+[[package]]
+name = "actix-http"
+version = "2.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5cb8958da437716f3f31b0e76f8daf36554128517d7df37ceba7df00f09622ee"
+dependencies = [
+ "actix-codec",
+ "actix-connect",
+ "actix-rt",
+ "actix-service",
+ "actix-threadpool",
+ "actix-utils",
+ "base64",
+ "bitflags",
+ "brotli2",
+ "bytes 0.5.6",
+ "cookie",
+ "copyless",
+ "derive_more",
+ "either",
+ "encoding_rs",
+ "flate2",
+ "futures-channel",
+ "futures-core",
+ "futures-util",
+ "fxhash",
+ "h2 0.2.7",
+ "http",
+ "httparse",
+ "indexmap",
+ "itoa 0.4.8",
+ "language-tags",
+ "lazy_static",
+ "log",
+ "mime",
+ "percent-encoding",
+ "pin-project 1.0.9",
+ "rand 0.7.3",
+ "regex",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "sha-1 0.9.8",
+ "slab",
+ "time 0.2.27",
+]
+
+[[package]]
+name = "actix-macros"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b4ca8ce00b267af8ccebbd647de0d61e0674b6e61185cc7a592ff88772bed655"
+dependencies = [
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "actix-router"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2ad299af73649e1fc893e333ccf86f377751eb95ff875d095131574c6f43452c"
+dependencies = [
+ "bytestring",
+ "http",
+ "log",
+ "regex",
+ "serde",
+]
+
+[[package]]
+name = "actix-rt"
+version = "1.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "143fcc2912e0d1de2bcf4e2f720d2a60c28652ab4179685a1ee159e0fb3db227"
+dependencies = [
+ "actix-macros",
+ "actix-threadpool",
+ "copyless",
+ "futures-channel",
+ "futures-util",
+ "smallvec",
+ "tokio 0.2.25",
+]
+
+[[package]]
+name = "actix-server"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "45407e6e672ca24784baa667c5d32ef109ccdd8d5e0b5ebb9ef8a67f4dfb708e"
+dependencies = [
+ "actix-codec",
+ "actix-rt",
+ "actix-service",
+ "actix-utils",
+ "futures-channel",
+ "futures-util",
+ "log",
+ "mio 0.6.23",
+ "mio-uds",
+ "num_cpus",
+ "slab",
+ "socket2 0.3.19",
+]
+
+[[package]]
+name = "actix-service"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0052435d581b5be835d11f4eb3bce417c8af18d87ddf8ace99f8e67e595882bb"
+dependencies = [
+ "futures-util",
+ "pin-project 0.4.29",
+]
+
+[[package]]
+name = "actix-testing"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47239ca38799ab74ee6a8a94d1ce857014b2ac36f242f70f3f75a66f691e791c"
+dependencies = [
+ "actix-macros",
+ "actix-rt",
+ "actix-server",
+ "actix-service",
+ "log",
+ "socket2 0.3.19",
+]
+
+[[package]]
+name = "actix-threadpool"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d209f04d002854b9afd3743032a27b066158817965bf5d036824d19ac2cc0e30"
+dependencies = [
+ "derive_more",
+ "futures-channel",
+ "lazy_static",
+ "log",
+ "num_cpus",
+ "parking_lot",
+ "threadpool",
+]
+
+[[package]]
+name = "actix-tls"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "24789b7d7361cf5503a504ebe1c10806896f61e96eca9a7350e23001aca715fb"
+dependencies = [
+ "actix-codec",
+ "actix-service",
+ "actix-utils",
+ "futures-util",
+]
+
+[[package]]
+name = "actix-utils"
+version = "2.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e9022dec56632d1d7979e59af14f0597a28a830a9c1c7fec8b2327eb9f16b5a"
+dependencies = [
+ "actix-codec",
+ "actix-rt",
+ "actix-service",
+ "bitflags",
+ "bytes 0.5.6",
+ "either",
+ "futures-channel",
+ "futures-sink",
+ "futures-util",
+ "log",
+ "pin-project 0.4.29",
+ "slab",
+]
+
+[[package]]
+name = "actix-web"
+version = "3.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b6534a126df581caf443ba2751cab42092c89b3f1d06a9d829b1e17edfe3e277"
+dependencies = [
+ "actix-codec",
+ "actix-http",
+ "actix-macros",
+ "actix-router",
+ "actix-rt",
+ "actix-server",
+ "actix-service",
+ "actix-testing",
+ "actix-threadpool",
+ "actix-tls",
+ "actix-utils",
+ "actix-web-codegen",
+ "awc",
+ "bytes 0.5.6",
+ "derive_more",
+ "encoding_rs",
+ "futures-channel",
+ "futures-core",
+ "futures-util",
+ "fxhash",
+ "log",
+ "mime",
+ "pin-project 1.0.9",
+ "regex",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+ "socket2 0.3.19",
+ "time 0.2.27",
+ "tinyvec",
+ "url",
+]
+
+[[package]]
+name = "actix-web-codegen"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ad26f77093333e0e7c6ffe54ebe3582d908a104e448723eec6d43d08b07143fb"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "adler"
 version = "1.0.2"
@@ -29,7 +302,7 @@ version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
 dependencies = [
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -103,9 +376,9 @@ dependencies = [
  "parking",
  "polling",
  "slab",
- "socket2",
+ "socket2 0.4.2",
  "waker-fn",
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -134,13 +407,13 @@ checksum = "83137067e3a2a6a06d67168e49e68a0957d215410473a740cea95a2425c0b7c6"
 dependencies = [
  "async-io",
  "blocking",
- "cfg-if",
+ "cfg-if 1.0.0",
  "event-listener",
  "futures-lite",
  "libc",
  "once_cell",
  "signal-hook",
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -176,7 +449,7 @@ dependencies = [
  "memchr",
  "num_cpus",
  "once_cell",
- "pin-project-lite",
+ "pin-project-lite 0.2.7",
  "pin-utils",
  "slab",
  "wasm-bindgen-futures",
@@ -188,6 +461,17 @@ version = "4.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e91831deabf0d6d7ec49552e489aed63b7456a7a3c46cff62adad428110b0af0"
 
+[[package]]
+name = "async-trait"
+version = "0.1.52"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "061a7acccaa286c011ddc30970520b98fa40e00c9d644633fb26b5fc63a265e3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "atomic-waker"
 version = "1.0.0"
@@ -202,7 +486,7 @@ checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
 dependencies = [
  "hermit-abi",
  "libc",
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -211,6 +495,36 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a"
 
+[[package]]
+name = "awc"
+version = "2.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b381e490e7b0cfc37ebc54079b0413d8093ef43d14a4e4747083f7fa47a9e691"
+dependencies = [
+ "actix-codec",
+ "actix-http",
+ "actix-rt",
+ "actix-service",
+ "base64",
+ "bytes 0.5.6",
+ "cfg-if 1.0.0",
+ "derive_more",
+ "futures-core",
+ "log",
+ "mime",
+ "percent-encoding",
+ "rand 0.7.3",
+ "serde",
+ "serde_json",
+ "serde_urlencoded",
+]
+
+[[package]]
+name = "base-x"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4521f3e3d031370679b3b140beb36dfe4801b09ac77e30c61941f97df3ef28b"
+
 [[package]]
 name = "base64"
 version = "0.13.0"
@@ -232,7 +546,16 @@ dependencies = [
  "block-padding",
  "byte-tools",
  "byteorder",
- "generic-array",
+ "generic-array 0.12.4",
+]
+
+[[package]]
+name = "block-buffer"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4152116fd6e9dadb291ae18fc1ec3575ed6d84c29642d97890f4b4a3417297e4"
+dependencies = [
+ "generic-array 0.14.4",
 ]
 
 [[package]]
@@ -258,6 +581,26 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "brotli-sys"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4445dea95f4c2b41cde57cc9fee236ae4dbae88d8fcbdb4750fc1bb5d86aaecd"
+dependencies = [
+ "cc",
+ "libc",
+]
+
+[[package]]
+name = "brotli2"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0cb036c3eade309815c15ddbacec5b22c4d1f3983a774ab2eac2e3e9ea85568e"
+dependencies = [
+ "brotli-sys",
+ "libc",
+]
+
 [[package]]
 name = "bstr"
 version = "0.2.17"
@@ -288,12 +631,27 @@ version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
+[[package]]
+name = "bytes"
+version = "0.5.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e4cec68f03f32e44924783795810fa50a7035d8c8ebe78580ad7e6c703fba38"
+
 [[package]]
 name = "bytes"
 version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c4872d67bab6358e59559027aa3b9157c53d9358c51423c17554809a8858e0f8"
 
+[[package]]
+name = "bytestring"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90706ba19e97b90786e19dc0d5e2abd80008d99d4c0c5d1ad0b5e72cec7c494d"
+dependencies = [
+ "bytes 1.1.0",
+]
+
 [[package]]
 name = "cache-padded"
 version = "1.2.0"
@@ -347,6 +705,12 @@ dependencies = [
  "once_cell",
 ]
 
+[[package]]
+name = "cfg-if"
+version = "0.1.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822"
+
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -363,7 +727,7 @@ dependencies = [
  "num-integer",
  "num-traits",
  "time 0.1.43",
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -385,7 +749,45 @@ dependencies = [
  "libc",
  "once_cell",
  "terminal_size",
- "winapi",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "const_fn"
+version = "0.4.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f92cfa0fd5690b3cf8c1ef2cabbd9b7ef22fa53cf5e1f92b05103f6d5d1cf6e7"
+
+[[package]]
+name = "convert_case"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6245d59a3e82a7fc217c5828a6692dbc6dfb63a0c8c90495621f7b9d79704a0e"
+
+[[package]]
+name = "cookie"
+version = "0.14.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "03a5d7b21829bc7b4bf4754a978a241ae54ea55a40f92bb20216e54096f4b951"
+dependencies = [
+ "percent-encoding",
+ "time 0.2.27",
+ "version_check",
+]
+
+[[package]]
+name = "copyless"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a2df960f5d869b2dd8532793fde43eb5427cceb126c929747a26823ab0eeb536"
+
+[[package]]
+name = "cpufeatures"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "95059428f66df56b63431fdb4e1947ed2190586af5c5a8a8b71122bdf5a7f469"
+dependencies = [
+ "libc",
 ]
 
 [[package]]
@@ -394,7 +796,7 @@ version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "738c290dfaea84fc1ca15ad9c168d083b05a714e1efddd8edaab678dc28d2836"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
 ]
 
 [[package]]
@@ -403,7 +805,7 @@ version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4ae5588f6b3c3cb05239e90bd110f257254aecd01e4635400391aeae07497845"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "crossbeam-channel",
  "crossbeam-deque",
  "crossbeam-epoch",
@@ -417,7 +819,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06ed27e177f16d65f0f0c22a213e17c696ace5dd64b14258b52f9417ccb52db4"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "crossbeam-utils",
 ]
 
@@ -427,7 +829,7 @@ version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6455c0ca19f0d2fbf751b908d5c55c1f5cbc65e03c4225427254b46890bdde1e"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "crossbeam-epoch",
  "crossbeam-utils",
 ]
@@ -438,7 +840,7 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4ec02e091aa634e2c3ada4a392989e7c3116673ef0ac5b72232439094d73b7fd"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "crossbeam-utils",
  "lazy_static",
  "memoffset",
@@ -451,7 +853,7 @@ version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b10ddc024425c88c2ad148c1b0fd53f4c6d38db9697c9f1588381212fa657c9"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "crossbeam-utils",
 ]
 
@@ -461,7 +863,7 @@ version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d82cfc11ce7f2c3faef78d8a684447b40d503d9681acebed6cb728d45940c4db"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "lazy_static",
 ]
 
@@ -542,6 +944,17 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "dashmap"
+version = "5.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b799062aaf67eb976af3bdca031ee6f846d2f0a5710ddbb0d2efee33f3cc4760"
+dependencies = [
+ "cfg-if 1.0.0",
+ "num_cpus",
+ "parking_lot",
+]
+
 [[package]]
 name = "dateparser"
 version = "0.1.6"
@@ -554,15 +967,43 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "derive_more"
+version = "0.99.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4fb810d30a7c1953f91334de7244731fc3f3c10d7fe163338a35b9f640960321"
+dependencies = [
+ "convert_case",
+ "proc-macro2",
+ "quote",
+ "rustc_version 0.4.0",
+ "syn",
+]
+
 [[package]]
 name = "digest"
 version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f3d0c8c8752312f9713efd397ff63acb9f85585afbf179282e720e7704954dd5"
 dependencies = [
- "generic-array",
+ "generic-array 0.12.4",
+]
+
+[[package]]
+name = "digest"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d3dd60d1080a57a05ab032377049e0591415d2b31afd7028356dbf3cc6dcb066"
+dependencies = [
+ "generic-array 0.14.4",
 ]
 
+[[package]]
+name = "discard"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "212d0f5754cb6769937f4501cc0e67f4f4483c8d2c3e1e922ee9edbe4ab4c7c0"
+
 [[package]]
 name = "docopt"
 version = "1.1.1"
@@ -593,7 +1034,19 @@ version = "0.8.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7896dc8abb250ffdda33912550faa54c88ec8b998dec0b2c55ab224921ce11df"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
+]
+
+[[package]]
+name = "enum-as-inner"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7c5f0096a91d210159eceb2ff5e1c4da18388a170e1e3ce948aac9c8fdbbf595"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -629,10 +1082,10 @@ version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "975ccf83d8d9d0d84682850a38c8169027be83368805971cc4f238c2b245bc98"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "redox_syscall",
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -641,7 +1094,7 @@ version = "1.0.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e6988e897c1c9c485f43b47a529cef42fde0547f9d8d41a7062518f1d8fc53f"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "crc32fast",
  "libc",
  "miniz_oxide",
@@ -681,6 +1134,37 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "fuchsia-zircon"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
+dependencies = [
+ "bitflags",
+ "fuchsia-zircon-sys",
+]
+
+[[package]]
+name = "fuchsia-zircon-sys"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
+
+[[package]]
+name = "futures"
+version = "0.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28560757fe2bb34e79f907794bb6b22ae8b0e5c669b638a1132f2592b19035b4"
+dependencies = [
+ "futures-channel",
+ "futures-core",
+ "futures-executor",
+ "futures-io",
+ "futures-sink",
+ "futures-task",
+ "futures-util",
+]
+
 [[package]]
 name = "futures-channel"
 version = "0.3.19"
@@ -688,6 +1172,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ba3dda0b6588335f360afc675d0564c17a77a2bda81ca178a4b6081bd86c7f0b"
 dependencies = [
  "futures-core",
+ "futures-sink",
 ]
 
 [[package]]
@@ -696,6 +1181,17 @@ version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d0c8ff0461b82559810cdccfde3215c3f373807f5e5232b71479bff7bb2583d7"
 
+[[package]]
+name = "futures-executor"
+version = "0.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29d6d2ff5bb10fb95c85b8ce46538a2e5f5e7fdc755623a7d4529ab8a4ed9d2a"
+dependencies = [
+ "futures-core",
+ "futures-task",
+ "futures-util",
+]
+
 [[package]]
 name = "futures-io"
 version = "0.3.19"
@@ -713,10 +1209,21 @@ dependencies = [
  "futures-io",
  "memchr",
  "parking",
- "pin-project-lite",
+ "pin-project-lite 0.2.7",
  "waker-fn",
 ]
 
+[[package]]
+name = "futures-macro"
+version = "0.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6dbd947adfffb0efc70599b3ddcf7b5597bb5fa9e245eb99f62b3a5f7bb8bd3c"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "futures-sink"
 version = "0.3.19"
@@ -729,21 +1236,39 @@ version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6ee7c6485c30167ce4dfb83ac568a849fe53274c831081476ee13e0dce1aad72"
 
+[[package]]
+name = "futures-timer"
+version = "3.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e64b03909df88034c26dc1547e8970b91f98bdb65165d6a4e9110d94263dbb2c"
+
 [[package]]
 name = "futures-util"
 version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d9b5cf40b47a271f77a8b1bec03ca09044d99d2372c0de244e66430761127164"
 dependencies = [
+ "futures-channel",
  "futures-core",
  "futures-io",
+ "futures-macro",
+ "futures-sink",
  "futures-task",
  "memchr",
- "pin-project-lite",
+ "pin-project-lite 0.2.7",
  "pin-utils",
  "slab",
 ]
 
+[[package]]
+name = "fxhash"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c31b6d751ae2c7f11320402d34e41349dd1016f8d5d45e48c4312bc8625af50c"
+dependencies = [
+ "byteorder",
+]
+
 [[package]]
 name = "generic-array"
 version = "0.12.4"
@@ -753,15 +1278,36 @@ dependencies = [
  "typenum",
 ]
 
+[[package]]
+name = "generic-array"
+version = "0.14.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "501466ecc8a30d1d3b7fc9229b122b2ce8ed6e9d9223f1138d4babb253e51817"
+dependencies = [
+ "typenum",
+ "version_check",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.1.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8fc3cb4d91f53b50155bdcfd23f6a4c39ae1969c2ae85982b135750cccaf5fce"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "wasi 0.9.0+wasi-snapshot-preview1",
+]
+
 [[package]]
 name = "getrandom"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7fcd999463524c52659517fe2cea98493cfe485d10565e7b0fb07dbba7ad2753"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
- "wasi",
+ "wasi 0.10.2+wasi-snapshot-preview1",
 ]
 
 [[package]]
@@ -783,13 +1329,50 @@ dependencies = [
  "web-sys",
 ]
 
+[[package]]
+name = "governor"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3de427a64787873c3b196285e6684cddbf0ae7d1d8d56eaafbb4120c4cb641"
+dependencies = [
+ "dashmap",
+ "futures",
+ "futures-timer",
+ "no-std-compat",
+ "nonzero_ext",
+ "parking_lot",
+ "quanta",
+ "rand 0.8.4",
+ "smallvec",
+]
+
+[[package]]
+name = "h2"
+version = "0.2.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e4728fd124914ad25e99e3d15a9361a879f6620f63cb56bbb08f95abb97a535"
+dependencies = [
+ "bytes 0.5.6",
+ "fnv",
+ "futures-core",
+ "futures-sink",
+ "futures-util",
+ "http",
+ "indexmap",
+ "slab",
+ "tokio 0.2.25",
+ "tokio-util 0.3.1",
+ "tracing",
+ "tracing-futures",
+]
+
 [[package]]
 name = "h2"
 version = "0.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f072413d126e57991455e0a922b31e4c8ba7c2ffbebf6b78b4f8521397d65cd"
 dependencies = [
- "bytes",
+ "bytes 1.1.0",
  "fnv",
  "futures-core",
  "futures-sink",
@@ -797,8 +1380,8 @@ dependencies = [
  "http",
  "indexmap",
  "slab",
- "tokio",
- "tokio-util",
+ "tokio 1.15.0",
+ "tokio-util 0.6.9",
  "tracing",
 ]
 
@@ -818,6 +1401,15 @@ version = "0.11.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
 
+[[package]]
+name = "heck"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6d621efb26863f0e9924c6ac577e8275e5e6b77455db64ffa6c65c904e9e132c"
+dependencies = [
+ "unicode-segmentation",
+]
+
 [[package]]
 name = "hermit-abi"
 version = "0.1.19"
@@ -837,13 +1429,24 @@ dependencies = [
  "lua52-sys",
 ]
 
+[[package]]
+name = "hostname"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c731c3e10504cc8ed35cfe2f1db4c9274c3d35fa486e3b31df46f068ef3e867"
+dependencies = [
+ "libc",
+ "match_cfg",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "http"
 version = "0.2.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1323096b05d41827dadeaee54c9981958c0f94e670bc94ed80037d1a7b8b186b"
 dependencies = [
- "bytes",
+ "bytes 1.1.0",
  "fnv",
  "itoa 0.4.8",
 ]
@@ -854,9 +1457,9 @@ version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ff4f84919677303da5f147645dbea6b1881f368d03ac84e1dc09031ebd7b2c6"
 dependencies = [
- "bytes",
+ "bytes 1.1.0",
  "http",
- "pin-project-lite",
+ "pin-project-lite 0.2.7",
 ]
 
 [[package]]
@@ -877,19 +1480,19 @@ version = "0.14.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b7ec3e62bdc98a2f0393a5048e4c30ef659440ea6e0e572965103e72bd836f55"
 dependencies = [
- "bytes",
+ "bytes 1.1.0",
  "futures-channel",
  "futures-core",
  "futures-util",
- "h2",
+ "h2 0.3.9",
  "http",
  "http-body",
  "httparse",
  "httpdate",
  "itoa 0.4.8",
- "pin-project-lite",
- "socket2",
- "tokio",
+ "pin-project-lite 0.2.7",
+ "socket2 0.4.2",
+ "tokio 1.15.0",
  "tower-service",
  "tracing",
  "want",
@@ -904,7 +1507,7 @@ dependencies = [
  "http",
  "hyper",
  "rustls",
- "tokio",
+ "tokio 1.15.0",
  "tokio-rustls",
 ]
 
@@ -977,7 +1580,28 @@ version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7a5bbe824c507c5da5956355e86a746d82e0e1464f65d862cc5e71da70e94b2c"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
+]
+
+[[package]]
+name = "iovec"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2b3ea6ff95e175473f8ffe6a7eb7c00d054240321b84c57051175fe3c1e075e"
+dependencies = [
+ "libc",
+]
+
+[[package]]
+name = "ipconfig"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7e2f18aece9709094573a9f24f483c4f65caa4298e2f7ae1b71cc65d853fad7"
+dependencies = [
+ "socket2 0.3.19",
+ "widestring",
+ "winapi 0.3.9",
+ "winreg 0.6.2",
 ]
 
 [[package]]
@@ -1039,6 +1663,16 @@ dependencies = [
  "num-traits",
 ]
 
+[[package]]
+name = "kernel32-sys"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
+dependencies = [
+ "winapi 0.2.8",
+ "winapi-build",
+]
+
 [[package]]
 name = "kv-log-macro"
 version = "1.0.7"
@@ -1048,6 +1682,12 @@ dependencies = [
  "log",
 ]
 
+[[package]]
+name = "language-tags"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a91d884b6667cd606bb5a69aa0c99ba811a115fc68915e7056ec08a46e93199a"
+
 [[package]]
 name = "lazy_static"
 version = "1.4.0"
@@ -1096,10 +1736,19 @@ version = "0.4.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "51b9bbe6c47d51fc3e1a9b945965946b4c44142ab8792c50835a980d362c2710"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "value-bag",
 ]
 
+[[package]]
+name = "lru-cache"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "31e24f1ad8321ca0e8a1e0ac13f23cb668e6f5466c2c57319f6a5cf1cc8e3b1c"
+dependencies = [
+ "linked-hash-map",
+]
+
 [[package]]
 name = "lua52-sys"
 version = "0.1.2"
@@ -1111,12 +1760,27 @@ dependencies = [
  "pkg-config",
 ]
 
+[[package]]
+name = "mach"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b823e83b2affd8f40a9ee8c29dbc56404c1e34cd2710921f2801e2cf29527afa"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "maplit"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3e2e65a1a2e43cfcb47a895c4c8b10d1f4a61097f9f254f183aee60cad9c651d"
 
+[[package]]
+name = "match_cfg"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ffbee8634e0d45d258acb448e7eaab3fce7a0a467395d4d9f228e3c1f01fb2e4"
+
 [[package]]
 name = "matches"
 version = "0.1.9"
@@ -1163,6 +1827,25 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "mio"
+version = "0.6.23"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4afd66f5b91bf2a3bc13fad0e21caedac168ca4c707504e75585648ae80e4cc4"
+dependencies = [
+ "cfg-if 0.1.10",
+ "fuchsia-zircon",
+ "fuchsia-zircon-sys",
+ "iovec",
+ "kernel32-sys",
+ "libc",
+ "log",
+ "miow 0.2.2",
+ "net2",
+ "slab",
+ "winapi 0.2.8",
+]
+
 [[package]]
 name = "mio"
 version = "0.7.14"
@@ -1171,9 +1854,32 @@ checksum = "8067b404fe97c70829f082dec8bcf4f71225d7eaea1d8645349cb76fa06205cc"
 dependencies = [
  "libc",
  "log",
- "miow",
+ "miow 0.3.7",
  "ntapi",
- "winapi",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "mio-uds"
+version = "0.6.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "afcb699eb26d4332647cc848492bbc15eafb26f08d0304550d5aa1f612e066f0"
+dependencies = [
+ "iovec",
+ "libc",
+ "mio 0.6.23",
+]
+
+[[package]]
+name = "miow"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ebd808424166322d4a38da87083bfddd3ac4c131334ed55856112eb06d46944d"
+dependencies = [
+ "kernel32-sys",
+ "net2",
+ "winapi 0.2.8",
+ "ws2_32-sys",
 ]
 
 [[package]]
@@ -1182,16 +1888,39 @@ version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9f1c5b025cda876f66ef43a113f91ebc9f4ccef34843000e0adf6ebbab84e21"
 dependencies = [
- "winapi",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "net2"
+version = "0.2.37"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "391630d12b68002ae1e25e8f974306474966550ad82dac6886fb8910c19568ae"
+dependencies = [
+ "cfg-if 0.1.10",
+ "libc",
+ "winapi 0.3.9",
 ]
 
+[[package]]
+name = "no-std-compat"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b93853da6d84c2e3c7d730d6473e8817692dd89be387eb01b94d7f108ecb5b8c"
+
+[[package]]
+name = "nonzero_ext"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "38bf9645c8b145698bb0b18a4637dcacbc421ea49bef2317e4fd8065a387cf21"
+
 [[package]]
 name = "ntapi"
 version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3f6bb902e437b6d86e03cce10a7e2af662292c5dfef23b65899ea3ac9354ad44"
 dependencies = [
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -1298,6 +2027,12 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2839e79665f131bdb5782e51f2c6c9599c133c6098982a54c794358bf432529c"
 
+[[package]]
+name = "opaque-debug"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "624a8340c38c1b80fd549087862da4ba43e08858af025b236e509b6649fc13d5"
+
 [[package]]
 name = "parking"
 version = "2.0.0"
@@ -1321,12 +2056,12 @@ version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d76e8e1493bcac0d2766c42737f34458f1c8c50c0d23bcb24ea953affb273216"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "instant",
  "libc",
  "redox_syscall",
  "smallvec",
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -1387,15 +2122,61 @@ dependencies = [
 ]
 
 [[package]]
-name = "pest_meta"
-version = "2.1.3"
+name = "pest_meta"
+version = "2.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "54be6e404f5317079812fc8f9f5279de376d8856929e21c184ecf6bbd692a11d"
+dependencies = [
+ "maplit",
+ "pest",
+ "sha-1 0.8.2",
+]
+
+[[package]]
+name = "pin-project"
+version = "0.4.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9615c18d31137579e9ff063499264ddc1278e7b1982757ebc111028c4d1dc909"
+dependencies = [
+ "pin-project-internal 0.4.29",
+]
+
+[[package]]
+name = "pin-project"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1622113ce508488160cff04e6abc60960e676d330e1ca0f77c0b8df17c81438f"
+dependencies = [
+ "pin-project-internal 1.0.9",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "0.4.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "044964427019eed9d49d9d5bbce6047ef18f37100ea400912a9fa4a3523ab12a"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "pin-project-internal"
+version = "1.0.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b95af56fee93df76d721d356ac1ca41fccf168bc448eb14049234df764ba3e76"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "pin-project-lite"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54be6e404f5317079812fc8f9f5279de376d8856929e21c184ecf6bbd692a11d"
-dependencies = [
- "maplit",
- "pest",
- "sha-1",
-]
+checksum = "257b64915a082f7811703966789728173279bdebb956b143dbcd23f6f970a777"
 
 [[package]]
 name = "pin-project-lite"
@@ -1421,11 +2202,11 @@ version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "685404d509889fade3e86fe3a5803bca2ec09b0c0778d5ada6ec8bf7a8de5259"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
  "log",
  "wepoll-ffi",
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -1455,7 +2236,7 @@ version = "0.15.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7cf01dbf1c05af0a14c7779ed6f3aa9deac9c3419606ac9de537a2d649005720"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "indoc",
  "libc",
  "parking_lot",
@@ -1501,6 +2282,8 @@ dependencies = [
 name = "qsv"
 version = "0.27.1"
 dependencies = [
+ "actix-governor",
+ "actix-web",
  "byteorder",
  "cached",
  "censor",
@@ -1513,6 +2296,7 @@ dependencies = [
  "eudex",
  "filetime",
  "flexi_logger",
+ "governor",
  "hlua",
  "indicatif",
  "itertools",
@@ -1525,7 +2309,7 @@ dependencies = [
  "qsv-stats",
  "qsv_currency",
  "quickcheck",
- "rand",
+ "rand 0.8.4",
  "regex",
  "reqwest",
  "reverse_geocoder",
@@ -1562,6 +2346,22 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "quanta"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "20afe714292d5e879d8b12740aa223c6a88f118af41870e8b6196e39a02238a8"
+dependencies = [
+ "crossbeam-utils",
+ "libc",
+ "mach",
+ "once_cell",
+ "raw-cpuid",
+ "wasi 0.10.2+wasi-snapshot-preview1",
+ "web-sys",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "quick-csv"
 version = "0.1.6"
@@ -1571,6 +2371,12 @@ dependencies = [
  "rustc-serialize",
 ]
 
+[[package]]
+name = "quick-error"
+version = "1.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
+
 [[package]]
 name = "quick-xml"
 version = "0.20.0"
@@ -1586,7 +2392,7 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "588f6378e4dd99458b60ec275b4477add41ce4fa9f64dcba6f15adccb19b50d6"
 dependencies = [
- "rand",
+ "rand 0.8.4",
 ]
 
 [[package]]
@@ -1598,6 +2404,19 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "rand"
+version = "0.7.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
+dependencies = [
+ "getrandom 0.1.16",
+ "libc",
+ "rand_chacha 0.2.2",
+ "rand_core 0.5.1",
+ "rand_hc 0.2.0",
+]
+
 [[package]]
 name = "rand"
 version = "0.8.4"
@@ -1605,9 +2424,19 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
 dependencies = [
  "libc",
- "rand_chacha",
- "rand_core",
- "rand_hc",
+ "rand_chacha 0.3.1",
+ "rand_core 0.6.3",
+ "rand_hc 0.3.1",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.5.1",
 ]
 
 [[package]]
@@ -1617,7 +2446,16 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.6.3",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
+dependencies = [
+ "getrandom 0.1.16",
 ]
 
 [[package]]
@@ -1626,7 +2464,16 @@ version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d34f1408f55294453790c48b2f1ebbb1c5b4b7563eb1f418bcfcfdbb06ebb4e7"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.3",
+]
+
+[[package]]
+name = "rand_hc"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
+dependencies = [
+ "rand_core 0.5.1",
 ]
 
 [[package]]
@@ -1635,7 +2482,16 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d51e9f596de227fda2ea6c84607f5558e196eeaf43c986b724ba4fb8fdf497e7"
 dependencies = [
- "rand_core",
+ "rand_core 0.6.3",
+]
+
+[[package]]
+name = "raw-cpuid"
+version = "10.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "929f54e29691d4e6a9cc558479de70db7aa3d98cd6fe7ab86d7507aa2886b9d2"
+dependencies = [
+ "bitflags",
 ]
 
 [[package]]
@@ -1701,7 +2557,7 @@ version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
 dependencies = [
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -1711,7 +2567,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7c4e0a76dc12a116108933f6301b95e83634e0c47b0afbed6abbaa0601e99258"
 dependencies = [
  "base64",
- "bytes",
+ "bytes 1.1.0",
  "encoding_rs",
  "futures-core",
  "futures-util",
@@ -1725,20 +2581,30 @@ dependencies = [
  "log",
  "mime",
  "percent-encoding",
- "pin-project-lite",
+ "pin-project-lite 0.2.7",
  "rustls",
  "rustls-pemfile",
  "serde",
  "serde_json",
  "serde_urlencoded",
- "tokio",
+ "tokio 1.15.0",
  "tokio-rustls",
  "url",
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
  "webpki-roots",
- "winreg",
+ "winreg 0.7.0",
+]
+
+[[package]]
+name = "resolv-conf"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52e44394d2086d010551b14b53b1f24e31647570cd1deb0379e2c21b329aba00"
+dependencies = [
+ "hostname",
+ "quick-error",
 ]
 
 [[package]]
@@ -1766,7 +2632,7 @@ dependencies = [
  "spin",
  "untrusted",
  "web-sys",
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -1775,6 +2641,24 @@ version = "0.3.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dcf128d1287d2ea9d80910b5f1120d0b8eede3fbf1abe91c40d39ea7d51e6fda"
 
+[[package]]
+name = "rustc_version"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
+dependencies = [
+ "semver 0.9.0",
+]
+
+[[package]]
+name = "rustc_version"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bfa0f585226d2e68097d4f95d113b15b83a82e819ab25717ec0590d9584ef366"
+dependencies = [
+ "semver 1.0.4",
+]
+
 [[package]]
 name = "rustls"
 version = "0.20.2"
@@ -1836,21 +2720,42 @@ dependencies = [
  "quick-xml",
  "regex",
  "reqwest",
- "semver",
+ "semver 0.11.0",
  "serde_json",
  "tempfile",
  "zip",
 ]
 
+[[package]]
+name = "semver"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
+dependencies = [
+ "semver-parser 0.7.0",
+]
+
 [[package]]
 name = "semver"
 version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f301af10236f6df4160f7c3f04eec6dbc70ace82d23326abad5edee88801c6b6"
 dependencies = [
- "semver-parser",
+ "semver-parser 0.10.2",
 ]
 
+[[package]]
+name = "semver"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "568a8e6258aa33c13358f81fd834adb854c6f7c9468520910a9b1e8fac068012"
+
+[[package]]
+name = "semver-parser"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
+
 [[package]]
 name = "semver-parser"
 version = "0.10.2"
@@ -1922,12 +2827,31 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f7d94d0bede923b3cea61f3f1ff57ff8cdfd77b400fb8f9998949e0cf04163df"
 dependencies = [
- "block-buffer",
- "digest",
+ "block-buffer 0.7.3",
+ "digest 0.8.1",
  "fake-simd",
- "opaque-debug",
+ "opaque-debug 0.2.3",
+]
+
+[[package]]
+name = "sha-1"
+version = "0.9.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "99cd6713db3cf16b6c84e06321e049a9b9f699826e16096d23bbcc44d15d51a6"
+dependencies = [
+ "block-buffer 0.9.0",
+ "cfg-if 1.0.0",
+ "cpufeatures",
+ "digest 0.9.0",
+ "opaque-debug 0.3.0",
 ]
 
+[[package]]
+name = "sha1"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2579985fda508104f7587689507983eadd6a6e84dd35d6d115361f530916fa0d"
+
 [[package]]
 name = "signal-hook"
 version = "0.3.13"
@@ -1959,6 +2883,17 @@ version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1ecab6c735a6bb4139c0caafd0cc3635748bbb3acf4550e8138122099251f309"
 
+[[package]]
+name = "socket2"
+version = "0.3.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "122e570113d28d773067fab24266b66753f6ea915758651696b6e35e49f88d6e"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "socket2"
 version = "0.4.2"
@@ -1966,7 +2901,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5dc90fe6c7be1a323296982db1836d1ea9e47b6839496dde9a541bc496df3516"
 dependencies = [
  "libc",
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -1975,6 +2910,64 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 
+[[package]]
+name = "standback"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e113fb6f3de07a243d434a56ec6f186dfd51cb08448239fe7bcae73f87ff28ff"
+dependencies = [
+ "version_check",
+]
+
+[[package]]
+name = "stdweb"
+version = "0.4.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d022496b16281348b52d0e30ae99e01a73d737b2f45d38fed4edf79f9325a1d5"
+dependencies = [
+ "discard",
+ "rustc_version 0.2.3",
+ "stdweb-derive",
+ "stdweb-internal-macros",
+ "stdweb-internal-runtime",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "stdweb-derive"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c87a60a40fccc84bef0652345bbbbbe20a605bf5d0ce81719fc476f5c03b50ef"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "serde",
+ "serde_derive",
+ "syn",
+]
+
+[[package]]
+name = "stdweb-internal-macros"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58fa5ff6ad0d98d1ffa8cb115892b6e69d67799f6763e162a1c9db421dc22e11"
+dependencies = [
+ "base-x",
+ "proc-macro2",
+ "quote",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "sha1",
+ "syn",
+]
+
+[[package]]
+name = "stdweb-internal-runtime"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "213701ba3370744dcd1a12960caa4843b3d68b4d1c0a5d575e0d65b2ee9d16c0"
+
 [[package]]
 name = "strsim"
 version = "0.10.0"
@@ -2007,12 +3000,12 @@ version = "3.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dac1c663cfc93810f88aed9b8941d48cabf856a1b111c29a40439018d870eb22"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "libc",
- "rand",
+ "rand 0.8.4",
  "redox_syscall",
  "remove_dir_all",
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -2022,7 +3015,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "633c1a546cee861a1a6d0dc69ebeca693bf4296661ba7852b9d21d159e0506df"
 dependencies = [
  "libc",
- "winapi",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -2037,7 +3030,7 @@ dependencies = [
  "levenshtein",
  "log",
  "once_cell",
- "rand",
+ "rand 0.8.4",
  "regex",
  "serde",
  "serde_derive",
@@ -2088,7 +3081,22 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca8a50ef2360fbd1eeb0ecd46795a87a19024eb4b53c5dc916ca1fd95fe62438"
 dependencies = [
  "libc",
- "winapi",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "time"
+version = "0.2.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4752a97f8eebd6854ff91f1c1824cd6160626ac4bd44287f7f4ea2035a02a242"
+dependencies = [
+ "const_fn",
+ "libc",
+ "standback",
+ "stdweb",
+ "time-macros 0.1.1",
+ "version_check",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -2099,7 +3107,17 @@ checksum = "41effe7cfa8af36f439fac33861b66b049edc6f9a32331e2312660529c1c24ad"
 dependencies = [
  "itoa 0.4.8",
  "libc",
- "time-macros",
+ "time-macros 0.2.3",
+]
+
+[[package]]
+name = "time-macros"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "957e9c6e26f12cb6d0dd7fc776bb67a706312e7299aed74c8dd5b17ebb27e2f1"
+dependencies = [
+ "proc-macro-hack",
+ "time-macros-impl",
 ]
 
 [[package]]
@@ -2108,6 +3126,19 @@ version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "25eb0ca3468fc0acc11828786797f6ef9aa1555e4a211a60d64cc8e4d1be47d6"
 
+[[package]]
+name = "time-macros-impl"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd3c141a1b43194f3f56a1411225df8646c55781d5f26db825b3d98507eb482f"
+dependencies = [
+ "proc-macro-hack",
+ "proc-macro2",
+ "quote",
+ "standback",
+ "syn",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.5.1"
@@ -2133,19 +3164,39 @@ dependencies = [
  "regex",
 ]
 
+[[package]]
+name = "tokio"
+version = "0.2.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6703a273949a90131b290be1fe7b039d0fc884aa1935860dfcbe056f28cd8092"
+dependencies = [
+ "bytes 0.5.6",
+ "futures-core",
+ "iovec",
+ "lazy_static",
+ "libc",
+ "memchr",
+ "mio 0.6.23",
+ "mio-uds",
+ "pin-project-lite 0.1.12",
+ "signal-hook-registry",
+ "slab",
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "tokio"
 version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fbbf1c778ec206785635ce8ad57fe52b3009ae9e0c9f574a728f3049d3e55838"
 dependencies = [
- "bytes",
+ "bytes 1.1.0",
  "libc",
  "memchr",
- "mio",
+ "mio 0.7.14",
  "num_cpus",
- "pin-project-lite",
- "winapi",
+ "pin-project-lite 0.2.7",
+ "winapi 0.3.9",
 ]
 
 [[package]]
@@ -2155,22 +3206,36 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a27d5f2b839802bd8267fa19b0530f5a08b9c08cd417976be2a65d130fe1c11b"
 dependencies = [
  "rustls",
- "tokio",
+ "tokio 1.15.0",
  "webpki",
 ]
 
+[[package]]
+name = "tokio-util"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be8242891f2b6cbef26a2d7e8605133c2c554cd35b3e4948ea892d6d68436499"
+dependencies = [
+ "bytes 0.5.6",
+ "futures-core",
+ "futures-sink",
+ "log",
+ "pin-project-lite 0.1.12",
+ "tokio 0.2.25",
+]
+
 [[package]]
 name = "tokio-util"
 version = "0.6.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9e99e1983e5d376cd8eb4b66604d2e99e79f5bd988c3055891dcd8c9e2604cc0"
 dependencies = [
- "bytes",
+ "bytes 1.1.0",
  "futures-core",
  "futures-sink",
  "log",
- "pin-project-lite",
- "tokio",
+ "pin-project-lite 0.2.7",
+ "tokio 1.15.0",
 ]
 
 [[package]]
@@ -2185,8 +3250,9 @@ version = "0.1.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "375a639232caf30edfc78e8d89b2d4c375515393e7af7e16f01cd96917fb2105"
 dependencies = [
- "cfg-if",
- "pin-project-lite",
+ "cfg-if 1.0.0",
+ "log",
+ "pin-project-lite 0.2.7",
  "tracing-core",
 ]
 
@@ -2199,6 +3265,55 @@ dependencies = [
  "lazy_static",
 ]
 
+[[package]]
+name = "tracing-futures"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "97d095ae15e245a057c8e8451bab9b3ee1e1f68e9ba2b4fbc18d0ac5237835f2"
+dependencies = [
+ "pin-project 1.0.9",
+ "tracing",
+]
+
+[[package]]
+name = "trust-dns-proto"
+version = "0.19.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1cad71a0c0d68ab9941d2fb6e82f8fb2e86d9945b94e1661dd0aaea2b88215a9"
+dependencies = [
+ "async-trait",
+ "cfg-if 1.0.0",
+ "enum-as-inner",
+ "futures",
+ "idna",
+ "lazy_static",
+ "log",
+ "rand 0.7.3",
+ "smallvec",
+ "thiserror",
+ "tokio 0.2.25",
+ "url",
+]
+
+[[package]]
+name = "trust-dns-resolver"
+version = "0.19.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "710f593b371175db53a26d0b38ed2978fafb9e9e8d3868b1acd753ea18df0ceb"
+dependencies = [
+ "cfg-if 0.1.10",
+ "futures",
+ "ipconfig",
+ "lazy_static",
+ "log",
+ "lru-cache",
+ "resolv-conf",
+ "smallvec",
+ "thiserror",
+ "tokio 0.2.25",
+ "trust-dns-proto",
+]
+
 [[package]]
 name = "try-lock"
 version = "0.2.3"
@@ -2241,6 +3356,12 @@ dependencies = [
  "tinyvec",
 ]
 
+[[package]]
+name = "unicode-segmentation"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8895849a949e7845e06bd6dc1aa51731a103c42707010a5b591c0038fb73385b"
+
 [[package]]
 name = "unicode-width"
 version = "0.1.9"
@@ -2283,7 +3404,7 @@ version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc5cf98d8186244414c848017f0e2676b3fcb46807f6668a97dfe67359a3c4b7"
 dependencies = [
- "getrandom",
+ "getrandom 0.2.3",
 ]
 
 [[package]]
@@ -2310,9 +3431,9 @@ dependencies = [
 
 [[package]]
 name = "version_check"
-version = "0.9.3"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5fecdca9a5291cc2b8dcf7dc02453fee791a280f3743cb0905f8822ae463b3fe"
+checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 
 [[package]]
 name = "waker-fn"
@@ -2330,6 +3451,12 @@ dependencies = [
  "try-lock",
 ]
 
+[[package]]
+name = "wasi"
+version = "0.9.0+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
+
 [[package]]
 name = "wasi"
 version = "0.10.2+wasi-snapshot-preview1"
@@ -2342,7 +3469,7 @@ version = "0.2.78"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "632f73e236b219150ea279196e54e610f5dbafa5d61786303d4da54f84e47fce"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "wasm-bindgen-macro",
 ]
 
@@ -2367,7 +3494,7 @@ version = "0.4.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8e8d7523cb1f2a4c96c1317ca690031b714a51cc14e05f712446691f413f5d39"
 dependencies = [
- "cfg-if",
+ "cfg-if 1.0.0",
  "js-sys",
  "wasm-bindgen",
  "web-sys",
@@ -2424,9 +3551,9 @@ dependencies = [
 
 [[package]]
 name = "webpki-roots"
-version = "0.22.1"
+version = "0.22.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c475786c6f47219345717a043a37ec04cb4bc185e28853adcc4fa0a947eba630"
+checksum = "552ceb903e957524388c4d3475725ff2c8b7960922063af6ce53c9a43da07449"
 dependencies = [
  "webpki",
 ]
@@ -2449,6 +3576,18 @@ dependencies = [
  "hashbrown 0.7.2",
 ]
 
+[[package]]
+name = "widestring"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c168940144dd21fd8046987c16a46a33d5fc84eec29ef9dcddc2ac9e31526b7c"
+
+[[package]]
+name = "winapi"
+version = "0.2.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
+
 [[package]]
 name = "winapi"
 version = "0.3.9"
@@ -2459,6 +3598,12 @@ dependencies = [
  "winapi-x86_64-pc-windows-gnu",
 ]
 
+[[package]]
+name = "winapi-build"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
+
 [[package]]
 name = "winapi-i686-pc-windows-gnu"
 version = "0.4.0"
@@ -2471,13 +3616,32 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
+[[package]]
+name = "winreg"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2986deb581c4fe11b621998a5e53361efe6b48a151178d0cd9eeffa4dc6acc9"
+dependencies = [
+ "winapi 0.3.9",
+]
+
 [[package]]
 name = "winreg"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0120db82e8a1e0b9fb3345a539c478767c0048d842860994d96113d5b667bd69"
 dependencies = [
- "winapi",
+ "winapi 0.3.9",
+]
+
+[[package]]
+name = "ws2_32-sys"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
+dependencies = [
+ "winapi 0.2.8",
+ "winapi-build",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 1913ac2c6..16edbf6a8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -81,9 +81,12 @@ whatlang = { version = "0.12.0", optional = true }
 reqwest = { version = "0.11", features = ["blocking", "json", "rustls-tls"], default-features = false }
 jql = { version = "3.0.6", default-features = false }
 pyo3 = { version = "0.15.1", features = ["auto-initialize"], optional = true }
+governor = "0.4"
 
 [dev-dependencies]
 quickcheck = { version = "1", default-features = false }
+actix-web = "3.3"
+actix-governor = "0.2"
 
 [features]
 default = ["mimalloc"]
diff --git a/src/cmd/fetch.rs b/src/cmd/fetch.rs
index 77172a575..a0f8856c4 100644
--- a/src/cmd/fetch.rs
+++ b/src/cmd/fetch.rs
@@ -24,7 +24,7 @@ fetch options:
     -c, --new-column <name>    Put the fetched values in a new column instead.
     --jql <selector>           Apply jql selector to API returned JSON value.
     -j, --jobs <value>         Number of concurrent requests.
-    --throttle <ms>            Set throttle delay between requests in milliseconds. Recommend 1000 ms or greater (default: 5000 ms).
+    --rate-limit <qps>         Rate Limit in Queries Per Second. [default: 5]
     --header <file>            File containing additional HTTP Request Headers. Useful for setting Authorization or overriding User Agent.
     --store-error              On error, store HTTP error instead of blank value.
     --cookies                  Automatically store and send cookies. Useful for authenticated sessions.
@@ -46,7 +46,7 @@ struct Args {
     flag_new_column: Option<String>,
     flag_jql: Option<String>,
     flag_jobs: Option<u8>,
-    flag_throttle: Option<usize>,
+    flag_rate_limit: Option<u32>,
     flag_header: Option<String>,
     flag_store_error: bool,
     flag_cookies: bool,
@@ -74,7 +74,7 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
             new column: {:?}, 
             jql: {:?},
             threads: {:?},
-            throttle delay: {:?},
+            rate limit: {:?},
             http header file: {:?},
             store error: {:?},
             store cookie: {:?},
@@ -87,7 +87,7 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
         &args.flag_new_column,
         &args.flag_jql,
         &args.flag_jobs,
-        &args.flag_throttle,
+        &args.flag_rate_limit,
         &args.flag_header,
         &args.flag_store_error,
         &args.flag_cookies,
@@ -114,12 +114,32 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
         "Only one single URL column may be selected."
     );
 
+    use std::num::NonZeroU32;
+    // default rate limit is actually set via docopt, so below init is just to satisfy compiler
+    let mut rate_limit: NonZeroU32 = NonZeroU32::new(5).unwrap();
+    if let Some(qps) = args.flag_rate_limit {
+        assert!(
+            qps <= 30 && qps > 0,
+            "Rate Limit should be between 1 to 30 queries per second."
+        );
+        rate_limit = NonZeroU32::new(qps).unwrap();
+    }
+
+
     use reqwest::blocking::Client;
     let client = Client::builder()
         .user_agent(DEFAULT_USER_AGENT)
         .build()
         .unwrap();
 
+    use governor::{
+        RateLimiter,
+        Quota
+    };
+
+
+    let limiter = RateLimiter::direct(Quota::per_second(rate_limit));
+
     let mut include_existing_columns = false;
 
     if let Some(name) = &args.flag_new_column {
@@ -152,7 +172,7 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
         let url = String::from_utf8_lossy(&selected_col_value).to_string();
         debug!("Fetching URL: {:?}", &url);
 
-        let final_value = get_cached_response(&url, &client, &args.flag_jql);
+        let final_value = get_cached_response(&url, &client, &limiter, &args.flag_jql);
 
         if include_existing_columns {
             record.push_field(final_value.as_bytes());
@@ -185,6 +205,18 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
     Ok(())
 }
 
+use governor::{
+    state::direct::NotKeyed,
+    state::InMemoryState,
+    clock::DefaultClock,
+    middleware::NoOpMiddleware
+};
+
+use std::{
+    thread,
+    time,
+};
+
 #[cached(
     key = "String",
     convert = r#"{ format!("{}", url) }"#,
@@ -193,8 +225,23 @@ pub fn run(argv: &[&str]) -> CliResult<()> {
 fn get_cached_response(
     url: &str,
     client: &reqwest::blocking::Client,
+    limiter: &governor::RateLimiter<NotKeyed, InMemoryState, DefaultClock, NoOpMiddleware>,
     flag_jql: &Option<String>,
 ) -> String {
+
+    loop {
+        match limiter.check() {
+            Ok(()) => {
+                // debug!("going ahead");
+                break;
+            },
+            _ => {
+                // debug!("sleeping for 10 ms");
+                thread::sleep(time::Duration::from_millis(10));
+            }
+        }
+    };
+
     let resp = client.get(url).send().unwrap();
     debug!("response: {:?}", &resp);
     let api_value = resp.text().unwrap();
diff --git a/tests/test_fetch.rs b/tests/test_fetch.rs
index c8079fafe..1c29ad2a1 100644
--- a/tests/test_fetch.rs
+++ b/tests/test_fetch.rs
@@ -1,3 +1,4 @@
+
 use crate::workdir::Workdir;
 
 #[test]
@@ -14,7 +15,8 @@ fn fetch_simple() {
         ],
     );
     let mut cmd = wrk.command("fetch");
-    cmd.arg("URL").arg("data.csv");
+    cmd.arg("URL")
+        .arg("data.csv");
 
     let got: Vec<Vec<String>> = wrk.read_stdout(&mut cmd);
     let expected = vec![
@@ -76,3 +78,167 @@ fn fetch_jql() {
     ];
     assert_eq!(got, expected);
 }
+
+use std::{
+    thread,
+    sync::mpsc
+};
+
+use actix_web::{
+        dev::Server,
+        middleware,
+        rt,
+        web,
+        App,
+        HttpRequest,
+        HttpServer,
+        Responder,
+        Result,
+};
+
+use serde::Serialize;
+#[derive(Serialize)]
+struct MyObj {
+    fullname: String,
+}
+
+async fn index() -> impl Responder {
+    "Hello world!"
+}
+
+/// handler with path parameters like `/user/{name}/`
+/// returns Smurf fullname
+async fn get_fullname(
+    req: HttpRequest,
+    web::Path((name,)): web::Path<(String,)>,
+) -> Result<impl Responder> {
+    println!("{:?}", req);
+
+    let obj = MyObj {
+        fullname: format!("{} Smurf", name),
+    };
+
+    Ok(web::Json(obj))
+
+}
+
+/// start an Actix Webserver with Rate Limiting via Governor 
+fn run_webserver(tx: mpsc::Sender<Server>) -> std::io::Result<()> {
+    let mut sys = rt::System::new("test");
+
+    use actix_governor::{
+        Governor,
+        GovernorConfigBuilder, 
+        GovernorConfig
+    };
+
+    // Allow bursts with up to five requests per IP address
+    // and replenishes one element every 500 ms (2 qps)
+    let governor_conf:GovernorConfig = GovernorConfigBuilder::default()
+        .per_millisecond(500)
+        .burst_size(5)
+        .finish()
+        .unwrap();
+
+    // srv is server controller type, `dev::Server`
+    let srv = HttpServer::new(move || {
+        App::new()
+            // enable logger
+            .wrap(middleware::Logger::default())
+            .wrap(Governor::new(&governor_conf))
+            .service(web::resource("/user/{name}").route(web::get().to(get_fullname)))
+            .service(web::resource("/").to(index))
+    })
+    .bind("127.0.0.1:8080")?
+    .run();
+
+    // send server controller to main thread
+    let _ = tx.send(srv.clone());
+
+    // run future
+    sys.block_on(srv)
+}
+
+#[test]
+fn fetch_ratelimit() {
+
+    // start webserver with rate limiting
+    let (tx, rx) = mpsc::channel();
+
+    println!("START Webserver ");
+    thread::spawn(move || {
+        let _ = run_webserver(tx);
+    });
+
+    let srv = rx.recv().unwrap();
+
+    // proceed with usual unit test
+    let wrk = Workdir::new("fetch");
+    wrk.create(
+        "data.csv",
+        vec![
+            svec!["URL"],
+            svec!["http://localhost:8080/user/Smurfette"],
+            svec!["http://localhost:8080/user/Papa"],
+            svec!["http://localhost:8080/user/Clumsy"],
+            svec!["http://localhost:8080/user/Brainy"],
+            svec!["http://localhost:8080/user/Grouchy"],
+            svec!["http://localhost:8080/user/Hefty"],
+            svec!["http://localhost:8080/user/Greedy"],
+            svec!["http://localhost:8080/user/Jokey"],
+            svec!["http://localhost:8080/user/Chef"],
+            svec!["http://localhost:8080/user/Vanity"],
+            svec!["http://localhost:8080/user/Handy"],
+            svec!["http://localhost:8080/user/Scaredy"],
+            svec!["http://localhost:8080/user/Tracker"],
+            svec!["http://localhost:8080/user/Sloppy"],
+            svec!["http://localhost:8080/user/Harmony"],
+            svec!["http://localhost:8080/user/Painter"],
+            svec!["http://localhost:8080/user/Poet"],
+            svec!["http://localhost:8080/user/Farmer"],
+            svec!["http://localhost:8080/user/Natural"],
+            svec!["http://localhost:8080/user/Snappy"],
+        ],
+    );
+    let mut cmd = wrk.command("fetch");
+    cmd.arg("URL")
+        .arg("--new-column")
+        .arg("Fullname")
+        .arg("--jql")
+        .arg(r#"."fullname""#)
+        .arg("--rate-limit")
+        .arg("2")
+        .arg("data.csv");
+
+    let got: Vec<Vec<String>> = wrk.read_stdout(&mut cmd);
+    let expected = vec![
+        svec!["URL", "Fullname"],
+        svec!["http://localhost:8080/user/Smurfette", "Smurfette Smurf"],
+        svec!["http://localhost:8080/user/Papa", "Papa Smurf"],
+        svec!["http://localhost:8080/user/Clumsy", "Clumsy Smurf"],
+        svec!["http://localhost:8080/user/Brainy", "Brainy Smurf"],
+        svec!["http://localhost:8080/user/Grouchy", "Grouchy Smurf"],
+        svec!["http://localhost:8080/user/Hefty", "Hefty Smurf"],
+        svec!["http://localhost:8080/user/Greedy", "Greedy Smurf"],
+        svec!["http://localhost:8080/user/Jokey", "Jokey Smurf"],
+        svec!["http://localhost:8080/user/Chef", "Chef Smurf"],
+        svec!["http://localhost:8080/user/Vanity", "Vanity Smurf"],
+        svec!["http://localhost:8080/user/Handy", "Handy Smurf"],
+        svec!["http://localhost:8080/user/Scaredy", "Scaredy Smurf"],
+        svec!["http://localhost:8080/user/Tracker", "Tracker Smurf"],
+        svec!["http://localhost:8080/user/Sloppy", "Sloppy Smurf"],
+        svec!["http://localhost:8080/user/Harmony", "Harmony Smurf"],
+        svec!["http://localhost:8080/user/Painter", "Painter Smurf"],
+        svec!["http://localhost:8080/user/Poet", "Poet Smurf"],
+        svec!["http://localhost:8080/user/Farmer", "Farmer Smurf"],
+        svec!["http://localhost:8080/user/Natural", "Natural Smurf"],
+        svec!["http://localhost:8080/user/Snappy", "Snappy Smurf"],
+    ];
+    assert_eq!(got, expected);
+
+    // init stop webserver and wait until server gracefully exit
+    println!("STOPPING Webserver");
+    rt::System::new("").block_on(srv.stop(true));
+
+}
+