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Docker: run the cache on Valkey 9.1 - #340
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QuYESaFoz9eRN6VncKUtee
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QuYESaFoz9eRN6VncKUtee
ericholscher
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ericholscher
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November 3, 2026 13:23
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Requested by Eric · project thread
ElastiCache ends standard support for Redis OSS 6 on January 31, 2027. Production will move with an in-place upgrade to node-based Valkey 9.1, the newest version ElastiCache offers. This switches the local broker/cache from Redis 6.2 to Valkey 9.1 so dev matches production.
No app changes are needed. With the pinned celery 5.6.3, kombu 5.6.2 and redis-py 8.1.0 used by both readthedocs.org and the builder, I tested against Valkey 9.1.3, and these all work:
RedisCachecelery/web/build-largeinspect().ping(),cancel_consumerandrevoke(terminate=True)KEYS/OBJECT IDLETIME/MEMORY USAGEcalls incleanup_pidbox_keysThe existing
--requirepasscommand andredis://URLs work unchanged.ElastiCache Serverless was ruled out. It runs in cluster mode, where the Celery worker fails at startup with
CROSSSLOTerrors, and Django's cache multi-key calls fail as well.🤖 Generated with Claude Code
https://claude.ai/code/session_01QuYESaFoz9eRN6VncKUtee