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ruby-grape/grape

This system is a Ruby-based web framework, specifically the Grape API framework, designed for building RESTful APIs. It provides a modular architecture for routing, parameter validation, content negotiation, and middleware management, with a strong emphasis on thread safety and performance optimization. The codebase has been refactored to use modern Ruby patterns, including value objects, immutable state, and strategy-based components for authentication and versioning.

53.4

Adequate · 2 August 2026

8.5k

lines of production code

Ruby

primary language

12

bus factor · 476 authors in all

3

measurements over time

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How it got here

2010–2012 · Architecture modernization and middleware refactoring

This period focused on modernizing the Grape framework's internal architecture, particularly by refactoring the middleware system to use a modular strategy pattern and value objects. The work also involved standardizing error handling, configuration management, and content negotiation through new base classes and improved test coverage.

17 changes

2013–2015 · Architecture refactoring and test expansion

This period focused on a comprehensive architectural refactoring of Grape's core components, including the DSL, authentication middleware, and validation system. The changes introduced modular, immutable, and thread-safe designs to improve performance and maintainability. These structural improvements were accompanied by extensive new test coverage and the addition of benchmarking tools to verify correctness and performance.

16 changes

2016–2024 · Router refactoring and test expansion

This period focused on refactoring the router architecture to improve encapsulation and thread safety, while significantly expanding test coverage for validations, integrations, and the new router classes. The work also included adding Docker support and updating the CI matrix to ensure compatibility with modern Ruby and Rails versions.

14 changes

2026 · Router refactoring and security hardening

This period focused on refactoring the router's path template assembly into a dedicated class and adding comprehensive tests for it. Concurrently, the team enhanced security by testing the JSON parser against class instantiation attacks and improved test coverage for middleware hashing and Swagger documentation generation.

6 changes

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About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 2 August 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit 32e481451f — the exact code this score is about.
  • Scored under rubric rubric-2026.08.18. Score the same commit under that rubric and you get the same number.
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