Village News: MySQL News + Events (13 November 2026)
Welcome back to Village News, our curated roundup of MySQL and database news. This week, PostgreSQL shipped updates fixing 52 security vulnerabilities and retired PostgreSQL 14, and the FOSDEM M-Ecosystem devroom opened its call for participation.
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Enjoy!
MySQL News
Note: Aggregated MySQL news can be found at Planet for MySQL Community and Planet MySQL (Oracle curated)
Just Because You Can, Doesn’t Mean You Should: Re-evaluating Galera Node Weights
Marco Tusa, Percona Blog
TL;DR - pc.weight lets you run an even-numbered Galera/PXC cluster, but working out quorum and views gets hard fast. Tusa's advice: keep to three nodes unless you truly need more.
Taming MySQL 8.4 Background Histogram Lock Wait Timeouts on Amazon RDS
Umesh Shastry, MySQL :: under_the_hood
TL;DR - On RDS for MySQL 8.4, background histogram updates collide with writes to mysql.rds_heartbeat2 and flood the log with MY-015116 warnings. The fix: drop that table's histograms, not change global settings.
Help prevent out-of-memory restarts on Aurora MySQL 8.4
AWS Database Blog
TL;DR - AWS reproduces a memory-pressure event to show how Aurora MySQL 8.4's automatic memory management avoids a restart, what to alarm on (AuroraMemoryHealthState), and when to take manual control.
How Oracle changed the future of MySQL: Dominic Preuss on Inside the Silicon Mind
VillageSQL
TL;DR - In an interview with Firas Sozan, VillageSQL's CEO covers MySQL's path from MySQL AB to Oracle, why investment went to PostgreSQL, and Oracle opening MySQL development to contributors such as AWS and Google.
DuckDB × MySQL Day: Eight Talks, One Question
OurSQL Foundation Blog
TL;DR - A walk through the agenda for the free online DuckDB × MySQL Day on November 17: eight talks on whether an embedded columnar engine can finally make analytics next to MySQL practical.
FOSDEM 2027 – The M-Ecosystem Devroom: Call for Participation
FOSDEM MySQL & Friends Devroom
TL;DR - The successor to the MariaDB, MySQL & Friends devroom runs Sunday, January 31, 2027 in Brussels. Submissions close November 29; pick "The M-ecosystem" track.
Heavy MySQL Reports in Seconds: Open Source HTAP with DBTrail and Percona Server for MySQL
Vadim Tkachenko, Percona Blog
TL;DR - In DBTrail's published benchmark, 12 of 14 reports ran faster on its DuckDB copy than on a Percona Server replica, and the slowest fell from 225 s to 7.94 s. The two lightest reports were slower on the copy.
Amazon RDS for MySQL 26.10 is now available in Amazon RDS Database Preview Environment
AWS What's New
TL;DR - MySQL 26.10 can now be tested on RDS. It reuses read views to remove a global mutex on busy READ COMMITTED workloads and logs warnings when history-list length crosses innodb_max_purge_lag.
Diagnosing MySQL at Scale (Part 1): Critical System Blocks, Metadata Locks, and Cluster Convoys
Umesh Shastry, MySQL :: under_the_hood
TL;DR - A four-part series on reading Performance Schema waits. Part 1 covers MDL, data-dictionary latches and Group Replication convoys; Part 2 covers storage, buffer pool latches and memory spills.
Releasing iClaustron API, a new Rust NDB API with a C and a Rust API towards RonDB 26.10.0
Mikael Ronström
TL;DR - iClaustron 1.0.0 is an MIT-licensed Rust/C NDB API for RonDB that reaches 9M key lookups/s on a laptop. Separately, Ronström charted his commits: 2,320 in 2026, up from 220 in 2025.
Vector search in MySQL: from a plugin to the top of the Contributor Summit agenda
Alkin Tezuysal, AskDba
TL;DR - A history of vector search in MySQL, from the MyVector plugin through adoption by MySQL forks to native work from hyperscalers. Oracle, Google, Percona and Intel opened the Contributor Summit with vector proposals.
Database News
PostgreSQL 18.7, 17.12, 16.16, 15.20, 14.25, and 19 RC 2 Released!
PostgreSQL Global Development Group
TL;DR - The update fixes 52 security vulnerabilities, several of them arbitrary-code-execution bugs rated CVSS 8.8, and over 140 other bugs. It is the final PostgreSQL 14 release, and some fixes need post-update steps.
TLS Connect/Disconnect Performance Boost With WolfSSL
Georgi Kodinov, MariaDB Foundation Blog
TL;DR - A two-line build fix lets MariaDB's bundled WolfSSL use its __uint128_t big-number code on non-x86 64-bit platforms. TLS connect/disconnect became more than 3x faster (4.5 s to 1.3 s per 100).
From an Isolated Project to the ADBC Driver Foundry: MariaDB Joins the CDN!
Frédéric Descamps, lefred's blog
TL;DR - lefred's native ADBC driver for MariaDB, which connects it to DuckDB over Apache Arrow, is now built and distributed by Columnar's ADBC Driver Foundry, with prebuilt binaries on its CDN.
Introducing Percona Database Service (PDS): An Experiment in Simplifying Database Management
Andrey Glazkov, Percona Blog
TL;DR - Percona released an early version of PDS, a self-hosted platform for provisioning and managing databases, starting with MySQL and PostgreSQL on Kubernetes. Percona is asking for feedback.
Benchmarking MariaDB Raft Cluster vs. MariaDB Galera Cluster
Axel Schwenke, MariaDB Corporation Blog
TL;DR - With one node at 80 ms RTT, Raft Cluster in Enterprise Server 12.3 held about 2,150 TPS against Galera's 125. On a low-latency three-node cluster the two were close. See also the Raft Cluster overview.
Ten ways a glibc change can break your PostgreSQL cluster
Pablo Svampa, Percona Blog
TL;DR - glibc upgrades can change locale collation order or remove locales, which silently breaks text indexes and comparisons. The post lists ten ways this hits a Postgres cluster, including RHEL 8→9→10 locale renames.
Giving the Optimizer a Hint: What’s New in MariaDB Server 13.0, compatibility and beyond
Oleg Smirnov, MariaDB Foundation Blog
TL;DR - MariaDB 13.0 adds MySQL-style /*+ ... */ optimizer hints for join order, indexes, join buffers, derived-table merging and more. It also adds MariaDB-specific extensions for views and query blocks.
Next-Level Benchmarking Overfitting
Thomas Neumann, Database Architects
TL;DR - Neumann tests the GenDB-V paper's claimed 22–61x TPC-H speedups over Umbra and DuckDB against memory-bandwidth limits. He argues they are infeasible for real query processing and come from AI-driven benchmark overfitting.
Upcoming Database Events
pgDay México 2026
November 13, 2026
Puerta Polanco
Mexico City, Mexico
DuckDB × MySQL Day
November 17, 2026
Online
PGConf.Asia 2026
November 17-18, 2026
Hong Kong
OurSQL Foundation Webinar: What Happened to the MySQL Query Cache?
November 18, 2026, 10:00 AM ET / 16:00 CET
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PgConf.Nepal 2026
November 18-21, 2026
Pulchowk Campus, Tribhuvan University
Kathmandu, Nepal
PGConf.PL 2026
November 24, 2026
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Gdańsk, Poland
PostgreSQL Conference Japan 2026
November 27, 2026
AP Tokyo Yaesu
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November 30 – December 4, 2026
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OurSQL Foundation Webinar: What Is the Fastest Database? Open-Source Benchmarking with HammerDB
December 3, 2026, 10:00 AM ET / 16:00 CET
Online
Open Source Summit Japan
December 7-9, 2026
Tokyo, Japan
CIDR 2027
January 24-27, 2027
Mövenpick Hotel Amsterdam City Centre
Amsterdam, The Netherlands
MySQL Belgian Days 2027
January 28-29, 2027
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March 9, 2027
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March 15-18, 2027
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DuckCon #8
April 7, 2027
De Wester (Westergas)
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April 10, 2027
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Postgres Conference 2027
April 21-23, 2027
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May 11-13, 2027
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May 11-14, 2027
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