ERR redis data_error ai_generated true

ERR Stream 'mystream' has too many entries, old entries will be dropped due to MAXLEN

ID: redis/stream-entries-maxlen-dropped

Also available as: JSON · Markdown · 中文
88%Fix Rate
85%Confidence
1Evidence
2023-12-15First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
7.2.0 active — — —
7.4.0 active — — —
8.0.0 active — — —

Root Cause

Stream reached its configured MAXLEN limit, causing automatic eviction of oldest entries.

generic

中文

流达到配置的 MAXLEN 限制，导致自动淘汰最旧条目。

Official Documentation

https://redis.io/docs/data-types/streams/

Workarounds

  1. 85% success Increase MAXLEN to a higher value: XTRIM mystream MAXLEN ~ 1000000. Use the ~ (tilde) for approximate trimming to reduce overhead. 
    Increase MAXLEN to a higher value: XTRIM mystream MAXLEN ~ 1000000. Use the ~ (tilde) for approximate trimming to reduce overhead.
  2. 75% success Set a time-based retention policy using MINID: XTRIM mystream MINID ~ 1715000000 (Unix timestamp). 
    Set a time-based retention policy using MINID: XTRIM mystream MINID ~ 1715000000 (Unix timestamp).

中文步骤

  1. 将 MAXLEN 增加到更高值：XTRIM mystream MAXLEN ~ 1000000。使用 ~（波浪号）进行近似修剪以减少开销。
  2. 使用 MINID 设置基于时间的保留策略：XTRIM mystream MINID ~ 1715000000（Unix 时间戳）。

Dead Ends

Common approaches that don't work:

  1. 40% fail

    Setting MAXLEN to 0 disables the limit entirely, but may cause unbounded memory growth and eventual OOM.

  2. 60% fail

    Manually deleting entries with XDEL does not reduce the stream length counter; only XTRIM works.