Your sampleRate won't save you from an error flood. Here’s what does

说明与用途

Sentry SDK 的 sampleRate 随机丢弃错误，导致稀有错误在错误洪水中被忽略。解决方案是发送所有事件并在服务器端按指纹进行速率限制，每分钟保留前 100 条堆栈跟踪。

问题

SampleRate in Sentry SDK drops errors randomly, causing rare bugs to be missed during error floods.

结果

Server-side per-fingerprint rate limiting captures rare bugs while reducing noisy flood loops, unlike client-side sampleRate which randomly drops all events.

工作流

• 1. Run flood test with @sentry/node SDK and sampleRate 0.1. 2. Observe 90% of loop errors and 90% of rare errors are dropped. 3. Create ingest.js to accept Sentry envelopes and count errors per fingerprint. 4. Implement token bucket per fingerprint (100 tokens, refilled 100/min). 5. Send all events to ingest.js. 6. Ingest.js stores first 100 stack traces per fingerprint per minute. 7. Verify rare bugs are retained while flood loop is throttled.

证据

sampleRate drops errors at random. It cuts the noisy loop by 90% and your one-off bugs by the same 90%

来源

What worked: send everything, then rate limit stored bodies per fingerprint on the server.

来源

The SDK drops events before sampling even runs: Dedupe eats exact repeats, and a tight burst overflows the 64-slot transport buffer.

来源