https://pawelurbanek.com/rails-sidekiq-monitoring

Things usually work until they don’t. Sidekiq background job process can explode, quietly turn off, or get stuck for a variety of reasons. Random network errors, misconfigured email clients, shortage of RAM, or disk space on Redis to name a few. Adding a correct monitoring infrastructure can save you a lot of headaches and angry calls from customers. In this blog post, I’ll describe a simple way to monitor the uptime and responsiveness of Sidekiq processes in Rails apps.