how to use redis PUBLISH/SUBSCRIBE with nodejs by event driven?

[jason.桂林]

how to use redis PUB/SUB with nodejs by event driven, I need an example, just like something like a chatroom or anything else.

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Best regards,

Jason Green
桂林

[Shripad K]

Check this:

https://github.com/shripadk/Socket.IO-PubSub

Specifically see socket.io/lib/client.js

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[jason.桂林]

Excellent. It looks very like socket.io,  is it a fork of Socket.IO-node

[Shripad K]

Yes it is a fork of socket.io :) Sorry for no documentation. I will be adding it shortly. However, you can try the modified example app and also look at client.js and listener.js for the modifications.

[Nikhil Marathe]

On Wed, Dec 15, 2010 at 8:24 AM, jason.桂林 <gui...@gmail.com> wrote:

> how to use redis PUB/SUB with nodejs by event driven, I need an example,
> just like something like a chatroom or anything else.

Here is a simple example https://gist.github.com/374881

Nikhil

[Matt Ranney]

On Tue, Dec 14, 2010 at 6:54 PM, jason.桂林 <gui...@gmail.com> wrote:

how to use redis PUB/SUB with nodejs by event driven, I need an example, just like something like a chatroom or anything else.

The node_redis test suite has a simple example of publish/subscribe:

https://github.com/mranney/node_redis/blob/master/test.js#L284-312

as well as most other things you can do with Redis.

[jason.桂林]

BTW， which node redis client should I use, I saw a lot redis client module for node in node wiki page.

2010/12/15 Matt Ranney <m...@ranney.com>

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[Shripad K]

Use Matt's node_redis :) Its fast. Socket.IO-PubSub uses that.

2010/12/15 jason.桂林 <gui...@gmail.com>

[jason.桂林]

you mean this one? https://github.com/mranney/node_redis/

[Matt Ranney]

On Tue, Dec 14, 2010 at 10:46 PM, jason.桂林 <gui...@gmail.com> wrote:

you mean this one? https://github.com/mranney/node_redis/

Well, that's the one I use.  :)

If you run into issues with it, there is usually good support available on IRC or through an issue on github.

[jason.桂林]

Here are typical results of multi_bench.js which is similar to redis-benchmark from the Redis distribution. It uses 50 concurrent connections with no pipelining.
The performance of node_redis improves dramatically with pipelining.

how to use pipelinling?

2010/12/16 Matt Ranney <m...@ranney.com>

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[Matt Ranney]

2010/12/23 jason.桂林 <gui...@gmail.com>

how to use pipelinling?

Pipelining will just happen automatically in node under certain circumstances, because everything in node is non-blocking.  In many Redis clients, you need to wait for a response from every command before you can send another one.  In node_redis, you can send as many as you like as fast as you like, without waiting for them to complete.