Redis®*: Configuring Redis with Sidekiq

This documentation is part of the Using with Ruby guide. You can view the complete guide here: How to connect Redis with Ruby.

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Sidekiq will automatically use the Redis server defined in the REDIS_URL environment variable.

You can set the REDIS_URL environment variable like this, replacing <password> and <XXXXXX> with your information:

REDIS_URL="rediss://default:<password>@<XXXXXX>.stackhero-network.com:<PORT_TLS>"

By default, Sidekiq is configured in a way that does not provide any tolerance for network disruptions. To improve this, we recommend updating the Sidekiq client configuration in config/initializers/sidekiq.rb to increase stability:

# File config/initializers/sidekiq.rb
Sidekiq.configure_client do |config|
  config.redis = {
    network_timeout: 5, # Set the timeout to 5 seconds
    pool_timeout: 5, # Set the timeout to 5 seconds
    reconnect_attempts: Array.new(240, 0.5) # Try to reconnect 240 times, every 0.5 second (120 seconds/2 minutes in total) before triggering an error
  }
end

This configuration ensures that if your Redis server becomes unavailable, the client will attempt to reconnect for 2 minutes before reporting an error. This gives the Redis server time to restart, for example. Depending on your Sidekiq usage, you can adjust this setting to better fit your specific needs.

For more information about Sidekiq and Redis, you can refer to the official documentation here.