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Redis 8.10 Ships Compact Hashes, a Bulk-Insert HIMPORT Command, and Native BACKUP

Redis 8.10 reaches general availability with a memory-saving compact hash encoding, a bulk-insert HIMPORT command, and a node-side BACKUP command built on multi-part AOF.

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Overview

Redis 8.10 reached general availability on July 29, 2026, according to the release’s GitHub page, which describes it as “the General Availability release of Redis 8.10 in Redis Open Source.” The release’s headline addition is compact hashes, a new hash encoding paired with a bulk-loading command, alongside a native backup command and a batch of new list, set, and time-series commands, as detailed on Redis’s official “What’s new” documentation page.

What We Know

  • Compact hashes cut memory use for uniform-schema keys. According to the release notes, compact hashes are “a new hash encoding that reduces memory usage by storing hash field names just once for keys that share a schema.” The documentation page adds that the feature ships with new configuration parameters — hash-rdb-load-min-template-entries, hash-rdb-load-max-template-entries, and hash-rdb-load-template-disassembly-threshold — and new metrics, including INFO STATS fields hash_templates and hash_template_keys and an INFO MEMORY field called used_memory_hash_templates.
  • A new HIMPORT command loads compact hashes in bulk. The release notes describe HIMPORT as providing “high-throughput bulk insertion of compact hashes,” according to Redis’s documentation.
  • BACKUP adds node-side backup and restore. The new BACKUP command is a “node-side implementation for backup and restore based on multi-part AOF (MP-AOF),” per the release notes.
  • New list and set commands avoid materializing intermediate results. LMOVEM and BLMOVEM “move multiple elements between lists in a single operation,” while SUNIONCARD and SDIFFCARD return the cardinality of a set union or difference “without materializing the result,” according to the documentation.
  • Stream reads can now be capped. XREAD and XREADGROUP accept new MAXCOUNT and MAXSIZE arguments “to cap the cumulative number of reply entries and the cumulative reply size,” the documentation states.
  • Search gains a stricter timeout mode and two new languages. FT.SEARCH, FT.AGGREGATE, and FT.HYBRID “now enforce the query TIMEOUT more strictly,” and the search-on-timeout policy gains a new RETURN_STRICT option that “return[s] best-effort partial results while enforcing the timeout through the post-processing (result) pipeline,” according to the documentation. Separately, Redis Search adds stemmer support for Malay and Tagalog.
  • Time series gets new range and label-query commands. TS.NRANGE and TS.NREVRANGE query across multiple time series and group results by timestamp, TS.READ performs an “optionally blocking read,” and TS.QUERYLABELS returns a list of labels and label-values, according to both the release notes and the documentation page.
  • The release also closes a security issue. Under a dedicated “Security fixes” heading, the documentation states that 8.10 “[f]ixed an issue where a user could manipulate data read by a connection by injecting \r\n sequences into a Redis error reply.”
  • Redis 8.10 ships under Redis Open Source’s tri-license model. The project’s license file states that “[s]tarting with Redis 8, Redis Open Source is moving to a tri-licensing model,” offering the Redis Source Available License 2.0, the Server Side Public License v1, or the GNU Affero General Public License v3 (AGPLv3) — the option that keeps Redis 8 available under an OSI-recognized open-source license.
  • The release is tested across a broad operating-system matrix. Per the release notes, Redis 8.10 is tested on Ubuntu 22.04, 24.04, and 26.04; Rocky Linux and AlmaLinux 8.10, 9.7, and 10.1; Debian 12.13 and 13.4; Alpine 3.23; and macOS Sonoma, Sequoia, and Tahoe on both Intel and ARM.

What We Don’t Know

Neither the release notes nor the documentation page quantifies how much memory compact hashes save in practice — the description is limited to the mechanism (storing shared field names once per schema) rather than a benchmarked percentage. Redis has not published independent third-party performance testing of the new encoding or the HIMPORT bulk-load path at the time of this release.