# peek/peek

Take a peek into your Rails applications.

Repository: https://github.com/peek/peek
Canonical: https://ross.abutalabs.com/products/peek-peek
Language: Ruby
License: MIT
License Family: permissive
Topics: redis, ruby, elasticsearch, peek
Last push: 2024-04-26T00:50:43+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 4925, "days_push": 860, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3173, forks 144 (observed 2026-08-28T04:07:47.552123+00:00)

## What it is
Peek is a Rails profiling tool, originally built at GitHub, that overlays a performance bar on your application showing request metrics like database queries, cache usage, and background workers. It is extensible via a plugin system of 'Peek Views' for custom metrics.

## Use cases
- profile Rails requests in the browser
- show database query counts per request
- monitor Redis and cache performance in development
- add custom performance metrics to a Rails app
- debug slow pages with an in-app performance bar

## When to choose
- you maintain a Rails app and want an extensible in-browser profiling bar
- you want per-request insight into DB, cache, and worker activity

## When to avoid
- you need full APM with production tracing and alerting
- your stack is not Ruby on Rails

## Facets
- artifact type: library
- maturity: maintenance
- function: monitoring, middleware, plugin-system
- domain: web-development, developer-tools, performance
- platform: ruby
- tags: rails, profiling, performance-bar, request-insights, web-server

## Member repositories
- peek/peek (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:47.552123+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:45:27.819747+00:00, confidence not recorded.
  - readme: https://github.com/peek/peek (fetched 2026-08-28T04:07:47.552123+00:00, sha 924c727f8427)
- Data as of 2026-08-30T08:39:29.467469+00:00.