“MySQL server has gone away” with Ruby on Rails

Question

After our Ruby on Rails application has run for a while, it starts throwing 500s with \"MySQL server has gone away\". Often this happens overnight. It\'s started doing this

Answer 1

Ruby on Rails 2.3 has a reconnect option for your database connection:

production:
  # Your settings
  reconnect: true

See:

• Ruby on Rails 2.3 Release Notes, sub section 4.8 Reconnecting MySQL Connections.

• MySQL auto-reconnect revisited

Good luck!