Best of MySQL — November 2025

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   Article

   Groww Engineering·27w

   When Two Databases Become One: How DuckDB Saved Our Trading Operations from Manual Reconciliation

   A trading platform faced recurring position-order mismatches across two separate MySQL databases, requiring 20-30 minutes of manual reconciliation by two engineers. By leveraging DuckDB's MySQL scanner extension to perform cross-database joins, they automated the entire process into a 2-3 minute operation running every 15 minutes. The solution eliminated manual intervention, improved accuracy from 85% to 99.9%, and enabled proactive monitoring instead of reactive fixes during market hours.

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2. 2
   Article

   CNCF·29w

   Announcing Vitess 23.0.0

   Vitess 23.0.0 introduces MySQL 8.4.6 as the default version, enhanced observability with new metrics for transaction routing and recovery tracking, and improved operational tooling for VTOrc. The release removes deprecated metrics and APIs, strengthens topology management with better Consul authentication requirements, and includes critical upgrade instructions for Operator users migrating from MySQL 8.0 to 8.4. Key improvements focus on production reliability, monitoring precision, and simplified deployment workflows for horizontally scaled MySQL workloads.

   36
3. 3
   Article

   Programming Digest·25w

   PlanetScale — PlanetScale

   PlanetScale offers managed cloud databases for Postgres and MySQL/Vitess with NVMe-backed storage for high IOPS performance. The service provides automatic failover across three availability zones, database branching for development workflows, and zero-downtime migrations. Pricing starts at $5 for single-node Postgres and $40 for HA clusters. The platform includes built-in monitoring, automated backups, point-in-time recovery, and deployment options including bring-your-own-cloud. Used by companies like Cursor, Intercom, Cash App, and Dub for handling millions of queries per second on terabytes of data.

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