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henrypoydar/Environment variables in Heroku

Last active March 19, 2023 18:13
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Rails + Sidekiq + Puma + Heroku
Raw
database.yml
production:
adapter: postgresql
url: <%= ENV["DATABASE_URL"] %>
pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
Raw
Environment variables in Heroku
WEB_PROCESSES=2
WEB_THREADS=5
WORKER_THREADS=15
Raw
Procfile
web: RAILS_MAX_THREADS=$WEB_THREADS bundle exec puma -C config/puma.rb
worker: RAILS_MAX_THREADS=$WORKER_THREADS bundle exec sidekiq -C config/sidekiq.yml
Raw
puma.rb
threads_count = ENV.fetch("WEB_THREADS") { 5 }.to_i
threads threads_count, threads_count
port ENV.fetch("PORT") { 3000 }
environment ENV.fetch("RAILS_ENV") { "development" }
workers ENV.fetch("WEB_PROCESSES") { 3 }.to_i
preload_app!
before_fork do
ActiveRecord::Base.connection_pool.disconnect! if defined?(ActiveRecord)
end
on_worker_boot do
ActiveRecord::Base.establish_connection if defined?(ActiveRecord)
Rails.logger.info("Database connection pool size for this web process is: #{ActiveRecord::Base.connection.pool.instance_variable_get('@size')}")
end
Raw
sidekiq.yml
---
:concurrency: <%= ENV['WORKER_THREADS'] %>
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