danmayer/coverband

Health v2 · maintenance only

Adoption not part of the score

2686 stars · 169 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Coverband is a Ruby gem that measures production code usage, counting how many times each line of code executes in a running application. It collects coverage data with low overhead via Rack middleware or background threads, stores it in Redis, and exposes a mountable web UI for reporting.

Use cases

• find dead code in a production Rails app
• measure which lines of code are actually executed in production
• identify unused code paths before refactoring
• track runtime vs eager-load code usage in Ruby apps
• view production code coverage reports in a web UI
• detect rarely used endpoints or background job code

When to choose

• you run a Ruby or Rails application in production and want insight into real code usage
• you need low-overhead line-level execution counters with a Redis-backed store
• you want a mountable web interface to share coverage reports with your team

When to avoid

• you need test suite code coverage - use SimpleCov instead
• your stack is not Ruby/Rack-based
• you cannot run Redis or another supported store in your environment

Facets

library · maturity active

monitoring analytics middleware developer-tools developer-tools web-development analytics performance ruby self-hosted code-coverage production-code-usage rack-middleware rails redis line-coverage dead-code-detection web-server

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markdown · JSON · MCP: product_card(name="danmayer/coverband")