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Add some docs for node cluster

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ry committed Oct 12, 2011
1 parent 08cb8fc commit de7fb3387980666f40ea5224992bc4068c430a6d
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  1. +1 −0 doc/api/_toc.markdown
  2. +23 −0 doc/api/cluster.markdown
@@ -32,6 +32,7 @@
* [ZLIB](zlib.html)
* [OS](os.html)
* [Debugger](debugger.html)
* [Cluster](cluster.html)
* Appendixes
* [Appendix 1: Recommended Third-party Modules](appendix_1.html)
* [Appendix 2: Deprecated API's](appendix_2.html)
@@ -0,0 +1,23 @@
## Cluster

A single instance of Node runs in a single thread. To take advantage of
multi-core systems the user will sometimes want to launch a cluster of Node
processes to handle the load.

By starting node with the `cluster` argument, Node will detect the number of
CPUs on the machine and start that many processes. For example suppose we
had a simple HTTP server in server.js:

require('http').createServer(function(req, res) {
res.end('hello world\n');

If we start it like this

% node cluster server.js
Detected 2 cpus
Worker 2438 online
Worker 2437 online

Node will automatically share port 8000 between the multiple instances.

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