go runtime_error ai_generated true

error: context deadline exceeded (goroutine worker)

ID: go/context-deadline-exceeded-worker

Also available as: JSON · Markdown · 中文
80%Fix Rate
86%Confidence
0Evidence
2024-12-08First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
1.19 active — — —
1.21 active — — —
1.22 active — — —

Root Cause

A ctx with a deadline expired before the worker finished, often because the deadline was too short or a downstream call is slow.

generic

中文

带截止时间的 ctx 在 worker 完成前过期，通常因为截止时间过短或下游调用过慢。

Workarounds

  1. 90% success 
    Measure p99 latency and set deadline accordingly; propagate ctx everywhere:

ctx, cancel := context.WithTimeout(parent, 5*time.Second)
defer cancel()
  2. 85% success 
    Add retries with exponential backoff for transient downstream timeouts.

Dead Ends

Common approaches that don't work:

  1. 80% fail

    Eliminates the safety net; slow calls can hang the goroutine indefinitely.

  2. 70% fail

    Arbitrary; if the downstream is genuinely slow, it still times out and the root latency issue remains.