Persistance Support

[mcollina]

• support for retained messages Retained messages #21;
• support for uncleaned clients Support persistent clients #24 on QoS 1 Store QoS 1 packets on disk #17;
• subscriptions and packets for uncleaned clients should have a TTL;
• support for Redis as external database;
• support for MongoDB as external database;
• CLI options for the basic storage (the default should use MemDOWN);
• Support for in-flight messages persistance Support persistance for in-flight messages #38;
• Add logging for the persistance wiring;
• Update README and add persistance APIs.

Closes #17.
Closes #21.
Closes #24.
Closes #38.

[mcollina]

I am getting some super-good benchmarks here:

Mosquitto

$ ./benchmarks/single_pub_sub.js --header -q 1 -r 10000
mean, standard deviation, median, mode, runs
1317.389, 2621.9008969056513, 1088, 165, 10000

Mosca

$ ./benchmarks/single_pub_sub.js --header -q 1 -r 10000
mean, standard deviation, median, mode, runs
208.6827, 252.84635984089678, 185, 170, 10000

It seems Mosquitto implementation of the persistance does not really scale to multiple runs.

Thanks also to @davedoesdev and its outstanding https://github.com/davedoesdev/qlobber.

[davedoesdev]

Excellent! What would be interesting is benchmarks for topics using wildcards.
Are you sure mosca was using TrieAscoltatore? Doesn't ascoltatore build MemoryAscoltatore unless it's specified?

Edit: Ah got it - you made the change in Ascoltatori to change the default.

Edit: Actually you forgot to do it ascoltatori.build so I don't think you were testing using TrieAscoltatore? I've made the changes in moscajs/ascoltatori#62

[mcollina]

I am directly using Qlobber in the persistance support.
The latest version of Ascoltatori uses TrieAscoltatore (I think 0.7.3)

Il giorno mercoledì 26 giugno 2013, David Halls ha scritto:

Excellent! What would be interesting is benchmarks for topics using
wildcards.
Are you sure mosca was using TrieAscoltatore? Doesn't ascoltatore build
MemoryAscoltatore unless it's specified?

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[davedoesdev]

I think you missed out ascoltatori.build

[mcollina]

Yes, you are right! I'm merging in your PR asap.

Il giorno mercoledì 26 giugno 2013, David Halls ha scritto:

I think you missed out ascoltatori.build

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