API Time Machine
Replay API responses across versions to test backward compatibility.
Screenshots
The Problem
Testing backward compatibility across API versions is complex.
The Solution
API Time Machine allows developers to replay API responses across multiple versions.
Implementation Details
As systems grow, API versioning becomes a major bottleneck. Replacing a legacy field or changing a response structure shouldn't be a "pray and deploy" operation.
Snapshot Testing
The tool takes snapshots of API responses for specific versions and allows developers to run "diff" tests against current development branches. This provides immediate feedback on breaking changes.
Middleware Proxy
I built a lightweight Go proxy that can intercept requests and redirect them to specific versioned mock servers, allowing for realistic integration testing without spinning up multiple copies of the entire backend.