Redis: Faster Intersections and Clearer Stream Lag
Merged changes cut repeated work in sorted-set intersections and fix long-lived hot-keys tracking and quicklist recompression, while open proposals add stream lag metrics and speed up radix-tree inserts and checksums alongside 8.10 test stabilization.
Duration: PT2M27S
Episode overview
This episode is a short developer briefing from Redis.
It explains recent repository work in plain language.
- Show: Redis
- Published: 2026-11-13T14:11:42Z
- Audio duration: PT2M27S
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 is Friday, November 13th, 2026, and this is your Redis briefing.
The through-line today is cheaper hot paths, and more honest metrics for long-lived workloads.
First, intersection work is getting cheaper. Pull request 16129, now merged, cuts repeated work in sorted-set intersection and intersection card on the B-plus tree. It reuses a cached member hash across probes, skips score decoding when only membership matters, short-circuits the card query when all inputs are the…
Second, visibility into state that lives for days. Pull request 16247 would add a fourth histogram to the info streams section, tracking maximum lag — the lag of the slowest consumer group per stream. That complements existing counts for groups, pending entries and consumers, and makes stuck consumers easier to…
Finally, release hygiene. Pull request 16250 bundles test and continuous integration fixes for 8.10, covering macOS runners, floating point tolerance in vector similarity search, page cache reclaim, and coverage reporting.
What is next: watch for decisions on the radix tree and ARM checksum changes, and for the stream lag histogram to land. If you run long hot keys tracking or compressed…
Nearby episodes from Redis
- Atomic Sorted-Set Moves and Input Hardening
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- Weekly Recap - Data Safety, Sorted Sets, and Observability
- Bloom Filters Eyed for Core, Replication Fixes Land
- Set Expiry Accounting Fix and Hashing Cleanup
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