Developer Builds Open-Source API Gateway 'Relay' to Replace AWS and Kong

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A developer has released Relay, a lightweight open-source API gateway written in Go, after growing frustrated with the complexity and cost of existing tools like AWS API Gateway and Kong. Relay sits in front of a backend service and handles API key validation, rate limiting, and request forwarding without requiring custom middleware code. The gateway uses Go's concurrency model to achieve sub-millisecond latency and includes in-memory key validation backed by Redis-based sliding-window rate limiting. A Next.js control panel lets users generate and revoke API keys and view real-time analytics as an alternative to AWS CloudWatch. The project is freely available on GitHub, with a managed cloud version also offered for users who want to skip self-hosting.

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