github.com/pyroscope-io/pyroscope@v0.37.3-0.20230725203016-5f6947968bd0/examples/ruby/rideshare_rails/config/puma.rb (about)

     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