55 lines
2.3 KiB
Ruby
55 lines
2.3 KiB
Ruby
# This configuration file will be evaluated by Puma. The top-level methods that
|
|
# are invoked here are part of Puma's configuration DSL. For more information
|
|
# about methods provided by the DSL, see https://puma.io/puma/Puma/DSL.html.
|
|
|
|
# Puma starts a configurable number of processes (workers) and each process
|
|
# serves each request in a thread from an internal thread pool.
|
|
#
|
|
# The ideal number of threads per worker depends both on how much time the
|
|
# application spends waiting for IO operations and on how much you wish to
|
|
# prioritize throughput over latency.
|
|
#
|
|
# As a rule of thumb, increasing the number of threads will increase how much
|
|
# traffic a given process can handle (throughput), but due to CRuby's
|
|
# Global VM Lock (GVL) it has diminishing returns and will degrade the
|
|
# response time (latency) of the application.
|
|
#
|
|
# The default is set to 3 threads as it's deemed a decent compromise between
|
|
# throughput and latency for the average Rails application.
|
|
#
|
|
# Any libraries that use a connection pool or another resource pool should
|
|
# be configured to provide at least as many connections as the number of
|
|
# threads. This includes Active Record's `pool` parameter in `database.yml`.
|
|
threads_count = ENV.fetch("RAILS_MAX_THREADS", 3)
|
|
threads threads_count, threads_count
|
|
|
|
# Specifies the `environment` that Puma will run in.
|
|
rails_env = ENV.fetch("RAILS_ENV", "development")
|
|
environment rails_env
|
|
|
|
case rails_env
|
|
when "production"
|
|
# If you are running more than 1 thread per process, the workers count
|
|
# should be equal to the number of processors (CPU cores) in production.
|
|
#
|
|
# Automatically detect the number of available processors in production.
|
|
require "concurrent-ruby"
|
|
workers_count = Integer(ENV.fetch("WEB_CONCURRENCY") { Concurrent.available_processor_count })
|
|
workers workers_count if workers_count > 1
|
|
|
|
preload_app!
|
|
when "development"
|
|
# Specifies a very generous `worker_timeout` so that the worker
|
|
# isn't killed by Puma when suspended by a debugger.
|
|
worker_timeout 3600
|
|
end
|
|
|
|
# Specifies the `port` that Puma will listen on to receive requests; default is 3000.
|
|
port ENV.fetch("PORT", 3000)
|
|
|
|
# Allow puma to be restarted by `bin/rails restart` command.
|
|
plugin :tmp_restart
|
|
plugin :solid_queue
|
|
|
|
# Only use a pidfile when requested
|
|
pidfile ENV["PIDFILE"] if ENV["PIDFILE"]
|