rack-mini-profiler
Middleware that displays a speed badge for every HTML page in Ruby Rack apps, with optional flamegraphs and memory profiling.
What is rack-mini-profiler?
rack-mini-profiler is a performance profiling middleware for Ruby Rack applications. It injects a small speed badge into HTML pages that displays detailed timing information for each request, including database queries, rendering time, and overall duration. It helps developers quickly identify performance bottlenecks in both development and production environments.
Ruby developers building web applications with Rack-based frameworks like Rails, Sinatra, or Hanami who need to monitor and optimize application performance.
It provides real-time, in-browser performance insights without requiring external tools, supports advanced profiling like flamegraphs and memory analysis, and is designed to be safe for production use with configurable access controls.
Overview
Profiler for your development and production Ruby rack apps.
Use Cases
Best For
- Profiling database query performance in Rails applications
- Identifying slow methods in Ruby web apps using flamegraphs
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