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1# This configuration file will be evaluated by Puma. The top-level methods that
2# are invoked here are part of Puma's configuration DSL. For more information
3# about methods provided by the DSL, see https://puma.io/puma/Puma/DSL.html.
4#
5# Puma starts a configurable number of processes (workers) and each process
6# serves each request in a thread from an internal thread pool.
7#
8# You can control the number of workers using ENV["WEB_CONCURRENCY"]. You
9# should only set this value when you want to run 2 or more workers. The
10# default is already 1. You can set it to `auto` to automatically start a worker
11# for each available processor.
12#
13# The ideal number of threads per worker depends both on how much time the
14# application spends waiting for IO operations and on how much you wish to
15# prioritize throughput over latency.
16#
17# As a rule of thumb, increasing the number of threads will increase how much
18# traffic a given process can handle (throughput), but due to CRuby's
19# Global VM Lock (GVL) it has diminishing returns and will degrade the
20# response time (latency) of the application.
21#
22# The default is set to 3 threads as it's deemed a decent compromise between
23# throughput and latency for the average Rails application.
24#
25# Any libraries that use a connection pool or another resource pool should
26# be configured to provide at least as many connections as the number of
27# threads. This includes Active Record's `pool` parameter in `database.yml`.
28threads_count = ENV.fetch("RAILS_MAX_THREADS", 3)
29threads threads_count, threads_count
30
31# Specifies the `port` that Puma will listen on to receive requests; default is 3000.
32port ENV.fetch("PORT", 3000)
33
34# Allow puma to be restarted by `bin/rails restart` command.
35plugin :tmp_restart
36
37# Run the Solid Queue supervisor inside of Puma for single-server deployments.
38plugin :solid_queue if ENV["SOLID_QUEUE_IN_PUMA"]
39
40# Specify the PID file. Defaults to tmp/pids/server.pid in development.
41# In other environments, only set the PID file if requested.
42pidfile ENV["PIDFILE"] if ENV["PIDFILE"]