puma.rb (1792B)
1 # Puma can serve each request in a thread from an internal thread pool. 2 # The `threads` method setting takes two numbers: a minimum and maximum. 3 # Any libraries that use thread pools should be configured to match 4 # the maximum value specified for Puma. Default is set to 5 threads for minimum 5 # and maximum; this matches the default thread size of Active Record. 6 # 7 max_threads_count = ENV.fetch("RAILS_MAX_THREADS") { 5 } 8 min_threads_count = ENV.fetch("RAILS_MIN_THREADS") { max_threads_count } 9 threads min_threads_count, max_threads_count 10 11 # Specifies the `worker_timeout` threshold that Puma will use to wait before 12 # terminating a worker in development environments. 13 # 14 worker_timeout 3600 if ENV.fetch("RAILS_ENV", "development") == "development" 15 16 # Specifies the `port` that Puma will listen on to receive requests; default is 3000. 17 # 18 port ENV.fetch("PORT") { 3000 } 19 20 # Specifies the `environment` that Puma will run in. 21 # 22 environment ENV.fetch("RAILS_ENV") { "development" } 23 24 # Specifies the `pidfile` that Puma will use. 25 pidfile ENV.fetch("PIDFILE") { "tmp/pids/server.pid" } 26 27 # Specifies the number of `workers` to boot in clustered mode. 28 # Workers are forked web server processes. If using threads and workers together 29 # the concurrency of the application would be max `threads` * `workers`. 30 # Workers do not work on JRuby or Windows (both of which do not support 31 # processes). 32 # 33 # workers ENV.fetch("WEB_CONCURRENCY") { 2 } 34 35 # Use the `preload_app!` method when specifying a `workers` number. 36 # This directive tells Puma to first boot the application and load code 37 # before forking the application. This takes advantage of Copy On Write 38 # process behavior so workers use less memory. 39 # 40 # preload_app! 41 42 # Allow puma to be restarted by `bin/rails restart` command. 43 plugin :tmp_restart