Show HN: RePlaya – self-hosted browser session replay with live tailing

Category: observability

Tags: session-replay, self-hosted, s2-streamstore, live-tailing, rrweb

Score: 7.5/10 (Innovation: 7, Technical: 8, Documentation: 9, Utility: 6)

RePlaya is a self-hosted session replay tool that stores each recording as a single S2 stream, enabling live tailing and replay without a multi-service backend. Its innovative use of S2 streams for both storage and live streaming simplifies infrastructure while supporting concurrent access and fencing. The project is well-documented with clear setup, deployment guidance, and security boundaries.

Target audience: backend devs, devops, product engineers

Repository: https://github.com/s2-streamstore/replaya · TypeScript · MIT · 5 stars

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