AsyncJob vs Thread

Unlocking Performance with AsyncJob: Specific Use Cases for I/O-Bound Operations

The Elasticsearch Scaling Nightmare Picture this: Your Rails application is humming along nicely until suddenly, user growth explodes. Great news, right? Not for our job queue. In a previous application I worked on, we faced significant challenges scaling ActiveJobs, primarily due to numerous Elasticsearch indexing and other I/O-bound tasks. As our user base grew, thousands of small jobs overwhelmed our queue, creating a perfect storm of bottlenecks despite our best efforts at dynamic worker scaling. ...

July 20, 2025 · 7 min · Vikas Kumar