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spring-projects/spring-data-rest

This system is a Java-based framework for building RESTful web services, specifically designed to expose Spring Data repositories as hypermedia-driven APIs. It provides a comprehensive infrastructure for managing resource representation, HTTP method exposure, and entity lifecycle events, while also offering a built-in HAL explorer for API discovery. The codebase has been modernized through a build system migration to Maven and a significant refactoring of its core components to support aggregate references, projections, and granular configuration.

64.7

Adequate · 31 July 2026

26k

lines of production code

Java

primary language

2

bus factor · 96 authors in all

4

measurements over time

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How it got here

2012–2013 · Build system migration and core refactoring

This period focused on migrating the project's build infrastructure from Gradle to Maven, accompanied by a comprehensive cleanup of legacy Spring MVC REST components. The team also refactored the core module by introducing new abstractions for aggregate references, validation, and repository event handling to modernize the framework's architecture.

21 changes

2014–2016 · test coverage expansion

This period was dominated by the addition of comprehensive unit and integration tests across the Spring Data REST codebase. The work focused on validating JSON serialization, security constraints, and REST controller behaviors using new test fixtures and harnesses. This effort significantly increased test coverage for core modules and specific features like JSON Patch and URI utilities.

14 changes

2019–2023 · HAL Explorer and documentation modernization

This period focused on introducing the HAL Explorer module to provide a web-based interface for exploring REST APIs, alongside migrating the project's documentation to the Antora format. The team also standardized the build environment by updating the Maven wrapper and integrating Spring Develocity for build analytics.

7 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 31 July 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit a0c4f58a4a — 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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