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Diffstat (limited to 'config/puma.rb')
-rw-r--r-- | config/puma.rb | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/config/puma.rb b/config/puma.rb new file mode 100644 index 0000000..03c166f --- /dev/null +++ b/config/puma.rb @@ -0,0 +1,34 @@ +# 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 +# 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 `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 + +# Specify the PID file. Defaults to tmp/pids/server.pid in development. +# In other environments, only set the PID file if requested. +pidfile ENV["PIDFILE"] if ENV["PIDFILE"] |