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- # Puma can serve each request in a thread from an internal thread pool.
- # The `threads` method setting takes two numbers a minimum and maximum.
- # Any libraries that use thread pools should be configured to match
- # the maximum value specified for Puma. Default is set to 5 threads for minimum
- # and maximum, this matches the default thread size of Active Record.
- #
- threads_count = ENV.fetch("MAX_THREADS") { 5 }.to_i
- threads threads_count, threads_count
-
- # Specifies the `port` that Puma will listen on to receive requests, default is 3000.
- #
- port ENV.fetch("PORT") { 3000 }
-
- # Specifies the `environment` that Puma will run in.
- #
- environment ENV.fetch("RAILS_ENV") { "development" }
-
- # Specifies the number of `workers` to boot in clustered mode.
- # Workers are forked webserver processes. If using threads and workers together
- # the concurrency of the application would be max `threads` * `workers`.
- # Workers do not work on JRuby or Windows (both of which do not support
- # processes).
- #
- workers ENV.fetch("WEB_CONCURRENCY") { 2 }
-
- # Use the `preload_app!` method when specifying a `workers` number.
- # This directive tells Puma to first boot the application and load code
- # before forking the application. This takes advantage of Copy On Write
- # process behavior so workers use less memory. If you use this option
- # you need to make sure to reconnect any threads in the `on_worker_boot`
- # block.
- #
- # preload_app!
-
- # The code in the `on_worker_boot` will be called if you are using
- # clustered mode by specifying a number of `workers`. After each worker
- # process is booted this block will be run, if you are using `preload_app!`
- # option you will want to use this block to reconnect to any threads
- # or connections that may have been created at application boot, Ruby
- # cannot share connections between processes.
- #
- # on_worker_boot do
- # ActiveRecord::Base.establish_connection if defined?(ActiveRecord)
- # end
-
- # Allow puma to be restarted by `rails restart` command.
- plugin :tmp_restart
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