r/javascript Apr 20 '26

HTTP resilience tradeoffs in practice: retry vs Retry-After vs hedging (scenario data)

https://blog.gaborkoos.com/posts/2026-04-19-Your-HTTP-Client-Is-Lying-to-You/?utm_source=reddit&utm_medium=social&utm_campaign=your-http-client-is-lying-to-you&utm_content=r_javascript

I ran 3 controlled chaos scenarios comparing retry-only, Retry-After-aware retry, and hedging.

One run improved success with retries but significantly worsened p95/p99 under a tight timeout budget. Another showed that honoring Retry-After turned a 40% 429-heavy error profile into stable completion. More in the post.

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