Note: To fix a critical bug we did out of cycle releases – 8.0.39, 8.4.2, 9.0.1 Building on the new LTS/Innovation release model In previous blogs, MySQL announced plans to move to a new LTS/Innovation release model, planning a major LTS release every 2 years. For more details see MySQL Releases: Innovation and LTS.  Since 8.4.x […]

Note: To fix a critical bug we did out of cycle releases - 8.0.39, 8.4.2, 9.0.1 MySQL Server 9.0.1 Innovation, 8.4.2 LTS, 8.0.39, are now available for download and in the MySQL HeatWave Database Service. These are the latest General Availability (GA) releases as of July 24, 2024.

Last year, in MySQL 8.0.31, we announced how HeatWave uses the new MySQL hypergraph optimizer to get better query plans. Since then, we have continued to work on the optimizer, and starting with MySQL 9.0, it has been enabled as an opt-in feature in HeatWave MySQL. This new feature is only available in HeatWave MySQL […]

When running tests, it is sometimes useful to slow down IOs to clearly show the impact of reading from the disk.  Modern laptops and servers usually have fast local SSDs, and most cloud vendors provide, in addition to fast local disks, relatively fast network block devices (EBS for AWS and Persistent Disk for GCP).  Even when using magnetic network block devices, IOs are not guaranteed

Some of our Percona Support customers report performance degradation after a major MySQL upgrade, and there can be many different reasons for this. These days, the most common major upgrade is from MySQL 5.7 (which recently reached EOL) to 8.0, and I am going to emphasize one important case that affects many database instances. Range […]

There is an old developer joke: “If you have a problem, and you decide to use regular expressions to solve it…you now have two problems.” Regular expressions (regex) often get a bad name because they can be difficult to decipher and implement. However, in skilled hands, regex can be extremely powerful. In this post, we […]

Regular expressions are a powerful tool for developers. In this post we take a look at some basic examples of how to use regular expressions in MySQL.

We're delighted to announce the release of Vitess 20 along with version 2.13.0 of the Vitess Kubernetes Operator. Version 20 focuses on usability and maturity of existing features, and continues to build on the solid foundation of scalability and performance established in previous versions. Our commitment remains steadfast in providing a powerful, scalable, and reliable solution for your database scaling needs. What's New in Vitess 20 # Query Compatibility: enhanced DML support including improved query compatibility, Vindex hints, and extended support for various sharded update and delete operations.

Is your MySQL database running at its best? While MySQL is known for its reliability and ease of use, ensuring top-notch performance is crucial. One way to do that is through performance monitoring, an essential practice for identifying bottlenecks, maintaining optimal speed, and guaranteeing a seamless user experience. Effective monitoring not only helps in detecting […]

Replication has been the core functionality, allowing high availability in MySQL for decades already. However, you may still encounter replication errors that keep you awake at night. One of the most common and challenging to deal with starts with: “Got fatal error 1236 from source when reading data from binary log“. This blog post is […]