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 environment variable REDIS_URL.

You can set the environment variable REDIS_URL 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 manner that does not accommodate any tolerance during network disturbances. To improve this, we suggest modifying the Sidekiq client configuration in config/initializers/sidekiq.rb to enhance 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 retries for a duration of 2 minutes before reporting an error. This gives the Redis server time to restart, for example. Depending on your Sidekiq's usage, you may adjust this setting to better suit your specific requirements.

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