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Adds some updates to clustered mode docs too
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Clint Shryock 2013-07-02 22:40:59 -05:00
parent 7ef726778d
commit 0d093378fc
1 changed files with 28 additions and 8 deletions
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README.md
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@ -82,6 +82,26 @@ Puma 2 offers clustered mode, allowing you to use forked processes to handle mul
On a ruby implementation that offers native threads, you should tune this number to match the number of cores available. On a ruby implementation that offers native threads, you should tune this number to match the number of cores available.
Note that threads are still used in clustered mode, and the `-t` thread flag setting is per worker, so `-w 2 -t 16:16` will be 32 threads. Note that threads are still used in clustered mode, and the `-t` thread flag setting is per worker, so `-w 2 -t 16:16` will be 32 threads.
This code can be used to setup the process before booting the application, allowing
you to do some puma-specific things that you don't want to embed in your application.
For instance, you could fire a log notification that a worker booted or send something to statsd.
This can be called multiple times to add hooks.
If you're running in Clustered Mode you can optionally choose to preload your application before starting up the workers. To do this simply specify the `--preload` flag in invocation:
# CLI invocation
$ puma -t 8:32 -w 3 --preload
If you're using a configuration file, use the `preload_app!` method, and be sure to specify your config file's location with the `-C` flag:
$ puma -C config/puma.rb
# config/puma.rb
threads 8,32
workers 3
preload_app!
Additionally, you can specify a block in your configuration that will be run on boot of each worker: Additionally, you can specify a block in your configuration that will be run on boot of each worker:
# config/puma.rb # config/puma.rb
@ -89,14 +109,14 @@ Additionally, you can specify a block in your configuration that will be run on
# configuration here # configuration here
end end
This code can be used to setup the process before booting the application, allowing If you're preloading your application and using ActiveRecord, it's recommend you setup your connection pool here:
you to do some puma-specific things that you don't want to embed in your application.
For instance, you could fire a log notification that a worker booted or send something to statsd.
This can be called multiple times to add hooks.
Be sure to specify the location of your configuration file: # config/puma.rb
on_worker_boot do
$ puma -t 8:32 -w 3 -C config/puma.rb ActiveSupport.on_load(:active_record) do
ActiveRecord::Base.establish_connection
end
end
### Binding TCP / Sockets ### Binding TCP / Sockets