Sidekiq For Heroku

  1. Version incompatible

The latest version of Redis gem makes quite much issues, the easiest way to deal with it is downgrade Redis gem version:

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gem 'redis', '< 4.6'

And update this dependencies by:

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bundle update
  1. Config sidekiq
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# config/initializers/sidekiq.rb

Sidekiq.configure_server do |config|
  config.redis = { ssl_params: { verify_mode: OpenSSL::SSL::VERIFY_NONE } }
end

Sidekiq.configure_client do |config|
  config.redis = { ssl_params: { verify_mode: OpenSSL::SSL::VERIFY_NONE } }
end

Note: verify_mode: OpenSSL::SSL::VERIFY_NONE is a must to make it works with Heroku

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# Custom sidekiq default settings: config/sidekiq.yml

concurrency: 5
max_retries: 3
  1. Update Procfile
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worker: bundle exec sidekiq -c 2

  1. Enable worker in the Heroku dashboard, by the default it was disable

  2. Check worker log

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heroku logs --t --app APP_NAME --dyno worker