Weekly Community Tech Digest: MySQL Federated Engine, MySQL 8.0 WITH, Spin‑Lock, DBLE & DTLE Updates

This week’s community tech digest, compiled by the “Gold‑medal broadcaster” Yongzheng, presents a curated list of recent MySQL‑related articles and open‑source middleware updates.

Community News

Mycat issue

MySQL issue

05.22 3306π technical sharing event in Guangzhou – details and interview

Technical Articles

Best practices for MySQL Federated engine – details

Investigation of a failed MySQL update – details

In‑depth usage of MySQL 8.0 common table expressions (WITH) – details

Spin‑lock pitfalls – details

Open‑Source Progress

DBLE weekly report highlights new features such as dynamic thread‑pool adjustment, XA transaction residue checks, and implicit commit for DDL statements, along with bug fixes for read‑only transactions, SQL digest in sampling statistics, and query optimization; community issue responses include connection reset, mysqldump disconnections, and communications link failures.

DTLE weekly report announces version 3.21.04.2 with performance fixes (commit 8329023), new metrics (commit b5cc10c), SIP‑based master‑slave source handling with job stall issues, and a delay‑metric reset bug.

Readers are invited to leave suggestions or questions about DBLE, DTLE, or TXLE middleware; the team will collect all queries and provide professional answers.

End of broadcast – thank you for reading.