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Backend changelog digest

May 25 - May 31, 2026. Useful releases, risky migrations, and noisy updates from the Backend channel.

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Backend updates in 2026-w22

8.8.0

  • Added new Array data structure and subkey notifications for hash fields, plus INCREX window counter rate limiter and XNACK stream command
  • Introduced COUNT aggregator for ZUNION/ZINTER, FPHA argument for JSON.SET, multi‑aggregator support in TimeSeries commands, and FT.HYBRID KNN clause with profiling
  • Provided Alpine/Debian Docker images, expanded OS support, runtime memory‑tracking, and assorted bug fixes