rajbacharya · October 26, 2017 07:18 · Jul 14, 2016
diff --git a/Errors Recieved b/Errors Recieved
@@ -0,0 +1,10 @@
+
+With  the size: attribute in your configure_* blocks removed = 
+ ERROR: heartbeat: ERR max number of clients reached
+ app[worker.1]: 3 TID-ormcs1tts ERROR: ERR max number of clients reached
+
+
+ with the size attribute = " Sidekiq seems to run normally but mailers not moving from in enqueued.
+
+
+
diff --git a/Procfile b/Procfile
@@ -0,0 +1,2 @@
+web: bundle exec puma -e production -C config/puma.rb  
+worker: bundle exec sidekiq -e production -C config/sidekiq.yml  
diff --git a/Puma.rb b/Puma.rb
@@ -0,0 +1,30 @@
+
+
+workers Integer(ENV['WEB_CONCURRENCY'] || 2)  
+threads_count = Integer(ENV['MAX_THREADS'] || 1)  
+threads threads_count, threads_count
+
+preload_app!
+
+rackup      DefaultRackup  
+port        ENV['PORT']     || 3000  
+environment ENV['RACK_ENV'] || 'development'
+
+# Because we are using preload_app, an instance of our app is created by master process (calling our initializers) and then memory space
+# is forked. So we should close DB connection in the master process to avoid connection leaks.
+# https://github.com/puma/puma/issues/303
+# http://stackoverflow.com/questions/17903689/puma-cluster-configuration-on-heroku
+# http://www.rubydoc.info/gems/puma/2.14.0/Puma%2FDSL%3Abefore_fork
+# Dont have to worry about Sidekiq's connection to Redis because connections are only created when needed. As long as we are not
+# queuing workers when rails is booting, there will be no redis connections to disconnect, so it should be fine.
+before_fork do  
+  puts "Puma master process about to fork. Closing existing Active record connections."
+  ActiveRecord::Base.connection.disconnect!
+end
+
+on_worker_boot do  
+  # Worker specific setup for Rails 4.1+
+  # See: https://devcenter.heroku.com/articles/deploying-rails-applications-with-the-puma-web-server#on-worker-boot
+  ActiveRecord::Base.establish_connection
+end  
+
diff --git a/Sidekiq Initializer b/Sidekiq Initializer
@@ -0,0 +1,28 @@
+if Rails.env.production?
+
+Sidekiq.configure_client do |config|
+    config.redis = { url: ENV['REDIS_URL'], size: 2 }
+  end
+
+  Sidekiq.configure_server do |config|
+    config.redis = { url: ENV['REDIS_URL'], size: 20 }
+
+
+    Rails.application.config.after_initialize do
+      Rails.logger.info("DB Connection Pool size for Sidekiq Server before disconnect is: #{ActiveRecord::Base.connection.pool.instance_variable_get('@size')}")
+      ActiveRecord::Base.connection_pool.disconnect!
+
+      ActiveSupport.on_load(:active_record) do
+        config = Rails.application.config.database_configuration[Rails.env]
+        config['reaping_frequency'] = ENV['DATABASE_REAP_FREQ'] || 10 # seconds
+        # config['pool'] = ENV['WORKER_DB_POOL_SIZE'] || Sidekiq.options[:concurrency]
+        config['pool'] = 16
+        ActiveRecord::Base.establish_connection(config)
+
+        Rails.logger.info("DB Connection Pool size for Sidekiq Server is now: #{ActiveRecord::Base.connection.pool.instance_variable_get('@size')}")
+      end
+    end
+  end
+
+
+end
diff --git a/production & Application RB b/production & Application RB
@@ -0,0 +1,35 @@
+  Production - Envirorment
+
+
+        config.action_mailer.default_url_options = { :host => 'domain.herokuapp.com'}
+        Rails.application.routes.default_url_options[:host] = 'domain.herokuapp.com'
+
+
+          ActionMailer::Base.delivery_method = :smtp
+          config.action_mailer.perform_deliveries = true
+          config.action_mailer.raise_delivery_errors = false
+          config.action_mailer.default :charset => "utf-8"
+          config.action_mailer.smtp_settings = {
+              :port => '587',
+              :address => 'smtp.mandrillapp.com',
+    ....
+            }
+        config.action_controller.include_all_helpers = true
+        ActionMailer::Base.default :from => "App<[email protected]>"
+
+        config.active_job.queue_name_prefix = "app"
+        config.active_job.queue_name_delimiter = "_"
+
+
+
+
+
+
+  Application. RB 
+
+    config.active_job.queue_adapter = :sidekiq
+
+
+
+
+
diff --git a/sidekiq.yml b/sidekiq.yml
@@ -0,0 +1,9 @@
+:verbose: true
+
+development:  
+  :concurrency: 5
+production:  
+  :concurrency: 20
+
+:queues:
+  - default
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		web: bundle exec puma -e production -C config/puma.rb
		worker: bundle exec sidekiq -e production -C config/sidekiq.yml
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