Databases

PostgreSQL 19 Beta 4, released September 24, reverts SQL/PGQ graph queries, online checksum toggling, and four other features as the project targets an October general availability.

The first release candidate of Valkey 9.2 introduces fork-free backups, reusable ACL roles, a radix-tree Path Hash type, and a B+ tree for large sorted sets.

Percona Server for MySQL 9.7.2-2 ships DISTANCE() and VECTOR_DISTANCE(), letting developers rank embeddings by similarity directly in SQL across five distance metrics.

PlanetScale's from-scratch sharded Postgres engine, first announced in 2025, is now open for platform preview with routers, shard groups, and a control plane.

Microsoft has stopped subscriptions that never used Azure SQL Data Sync from creating new sync groups, entering the final phase before the service's September 30, 2027 shutdown.

Polars 2.0-rc.1 flips LazyFrame queries to the streaming engine by default, a change the project says should be roughly 5x faster while removing melt(), join_nulls, and other older APIs.

Harper's 5.2 release isolates database commits onto dedicated threads and adds a record cache, while a company benchmark argues single-runtime architecture beats a Vercel-based stack on personalized reads.

Databricks has acquired Electric, pairing its WASM-based local Postgres, PGlite, with a real-time sync engine to give AI agents fast local data alongside its centralized Lakebase database.

AWS Glue 6.0 launches with 30% lower pricing, complete Apache Iceberg v3 support built on Iceberg 1.11.0, and a modernized Spark 4.1 runtime.

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.

ClickHouse's pg_clickhouse extension now pushes whole correlated subqueries down to ClickHouse, taking TPC-H pushdown coverage from 12 to 16 of 22 queries.

DuckDB's team previewed version 2.0, codenamed Cyanoptera, replacing its PostgreSQL-derived SQL parser with an extensible PEG-based parser and adding client/server mode and triggers.