Redis Resharding Dumper

Inspired by redis-resharding-proxy.

Redis Resharding Dumper could be used to split (re-shard) instance of Redis into several smaller instances without interrupting normal operations.

Introduction

Redis resharding dumper is written in Go and requires no dependencies.

Compare to redis-resharding-proxy

	redis-resharding-proxy	redis-resharding-dumper
Connection to old redis	slave of old redis	slave of old redis
Connection to new redis	master of new redis	client of new redis
How to resharding	regex	not implemented. leave it to twemproxy
RDB in SYNC	parse and filter rdb	parse rdb to set/hset.. command(slower)
Resharding multi server	no	yes

Installing/building

If you have Go environment ready:

go get github.com/yegong/redis-resharding-dumper

Otherwise install Go and set up environment:

$ mkdir $HOME/go
$ export GOPATH=$HOME/go
$ export PATH=$PATH:$GOPATH/bin

After that you can run redis-resharding-dumper.

Using

redis-resharding-dumper accepts several options:

-master-host="localhost": Master Redis host
-master-port=6379: Master Redis port
-slave-host="localhost": Proxy listening interface, default is all interfaces
-slave-port=6380: Proxy port for listening

They are used to configure proxy's listening address (which is used in Redis slave to connect to) and master Redis address.

Compatibility

Resharding proxy should be compatible with any Redis version.

Thanks

I would like to say thanks for ideas and inspiration to Andrey Smirnov.

Copyright and Licensing

Copyright 2016 Cooper Du. Unless otherwise noted, the source files are distributed under the MIT License found in the LICENSE file.