Redis: Durability Fixes and Slow Log Clarity
Open fixes target AOF duplication, transaction rollback, and slot-migration data loss, while merged work adds CPU time to SLOWLOG and tightens sorted-set memory use.
Duration: PT2M21S
Episode overview
This episode is a short developer briefing from Redis.
It explains recent repository work in plain language.
- Show: Redis
- Published: 2026-11-05T14:12:24Z
- Audio duration: PT2M21S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning, it's Thursday, November 5th, 2026, and this is your Redis briefing.
The throughline today is what happens when things fail — stalled writes, corrupt tails, and rejected migrations — and whether Redis recovers cleanly.
First, durability. Three proposals tighten recovery. Proposal 16175 would block an append-only file rewrite when the write buffer is still stuck after an error, preventing commands already in the base snapshot from being replayed twice on load. Related, proposal 16178 extends transaction rollback to short reads and…
Second, knowing why you're slow. Merged change 15907 adds per-command CPU time to the slow log, plus off-CPU detection for starved event loops. If wall time is high but CPU time is low, you're waiting, not burning cycles. There's a new tracking switch, default on, and counters in server stats. For module authors,…
Finally, memory hygiene and tests. Merged fix 16163 stops sorted-set adds from leaving a huge, mostly empty index after conversion to the B-tree encoding, which also sped up scans. Proposal 16177 continues that cleanup by removing dead skiplist paths. Test-only work in 16103 covers bless metadata across migration…
What's next:…
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