DBLE 2.19.11.0 Release Notes and Feature Overview

DBLE (MyCat Plus) is an enterprise‑grade open‑source distributed middleware that offers data sharding, read/write separation, distributed transaction support, and global ID management. The project’s official repository and documentation are available on GitHub.

Version 2.19.11.0 was released 90 days after 2.19.09.0, adding 13 new features, fixing 28 defects, and making two backward‑compatibility adjustments.

Key updates include:

Introduction of a customizable global table check mechanism (replacing the old method).

Support for custom global table check development and usage.

New management commands such as show @@data_distribution , show @@connection.sql (with STAGE column), and show @@Questions .

Configuration additions like autocommit in server.xml and renaming primaryKey to cacheKey in schema.xml .

Enhanced view handling, vertical sharding support, and kill‑query statement support.

The release also addresses numerous bugs, ranging from data encoding issues in LOAD DATA INFILE to incorrect results in natural joins on global tables, memory leaks, and compatibility problems with large numbers of data hosts.

Breaking backward compatibility changes include removal of the old global table check logic and the renaming of primaryKey to cacheKey in schema.xml .

For complete details, refer to the official Release Notes and the translated Chinese version provided in the source.