ØMQ: Mission Accomplished

I think 0MQ is brilliant. If this is your first time looking at 0MQ, I'd suggest the following:<p><a href="http://www.zeromq.org/intro:read-the-manual" rel="nofollow">http://www.zeromq.org/intro:read-the-manual</a><p>Watch the first video by Ian Barber. He's an excellent presenter.<p>The guide ( <a href="http://zguide.zeromq.org/page:all" rel="nofollow">http://zguide.zeromq.org/page:all</a> ) is very lengthy and comprehensive, but the "hello world" example and the "Divide and Conquer" example (fan out jobs, work, fan in results) will get you up and running and start showing you a sliver of the amazing power of 0MQ.<p>They've even got a lot of their examples in many languages:<p>C++ | C# | Clojure | CL | Erlang | F# | Haskell | Haxe | Java | Lua | Node.js | Perl | PHP | Python | Ruby | Scala | Ada | Basic | Go | Objective-C | ooc

0MQ looks very interesting, but most of the information available seems to be "how to use it". I can't find detailed specifications of its behavior, nor a detailed description of the implementation that I could use to figure that out myself. (Short of wading through the source code.) So it's hard to understand exactly how load balancing works, exactly what happens to in-flight messages on a server crash, exactly what guarantees are provided for message ordering (e.g. in a complex multi-participant scenario), at-least-once vs. at-most-once message delivery, etc.<p>Does anyone know of a good, detailed explanation of how 0MQ is implemented?

ZeroMQ is amazing. The last few months I have been using it for all kinds of things -- from creating multiprocessing Python apps to replacing an HTTP REST backend with a high-performance ZeroMQ server.

Last time I looked into zmq, it was not recommended for use in public internet services -- not resilient enough against a potential DoS attack or buggy client implementation. Has this changed?

Wow, programming can really be romantic.

What HPC products use 0mq?<p>Would it be applicable to large-scale optimization problems, e.g. in context of machine learning?

He's talking about 3.1, while publicly 3.0 is still in beta. Does anyone know when 3.1 will come out?

Congratz! I've been using 0MQ for few years on distributed db, now it's hard not to architect distributed/threaded apps without 'message passing' design which 0mq is pushing for. Plus the mailing list is pretty helpful and friendly.

Anyone know of a good and recent ØMQ/AMPQ/STOMP comparison, specifically with attention paid to the implementations available?

Are there any hosting services out there that currently support using ZeroMQ?