MySQL 8.4 has now been officially released, and this is a quick review of what is in the release notes. This is momentous as it is designated a Long-Term Support (LTS) release. Various 8.0 releases introduced material changes that impacted speed and stability, causing hair-pulling and swearing among those affected. Please note this is a […]

Yes, but now it likes them more, and here is why. Intro Using the LIKE clause to filter triggers or views from a specific table is common. However, it can play a trick on you, especially if you don’t get to see the output (i.e., in a non-interactive session). Let’s take a look at a […]

We usually receive and see some questions regarding the charset levels in MySQL, especially after the deprecation of utf8mb3 and the new default uf8mb4. If you understand how the charset works on MySQL but have some questions regarding this change, please check out Migrating to utf8mb4: Things to Consider by Sveta Smirnova. Some of the […]

It’s a common scenario to have a Percona Monitoring and Management (PMM) server running on Kubernetes and also desire to monitor databases that are running outside the Kubernetes cluster. The Ingress NGINX Controller is one of the most popular choices for managing the inbound traffic to K8s. It acts as a reverse proxy and load […]

We met with Vinicius Grippa, a Senior Support Engineer at Percona. He is also active in the open source community and was recognized as a MySQL Rock Star in 2023. In the previous interview with Vinicius, we discussed the upcoming End of Life (EOL) for MySQL 5.7. Now that MySQL 5.7 has reached EOL, MySQL […]

This blog was originally published in June 2020 and was updated in April 2024. One of the most common support tickets we get at Percona is the infamous “database is running slower” ticket.  While this can be caused by a multitude of factors, it is more often than not caused by a bad or slow […]

This blog was originally published in January 2023 and was updated in April 2024. MySQL index is a data structure used to optimize the performance of database queries at the expense of additional writes and storage space to keep the index data structure up to date. It is used to quickly locate data without having […]

This blog was originally published in January 2023 and was updated in April 2024. Recently I was working with a customer wherein our focus was to carry out a performance audit of their multiple MySQL database nodes. We started looking into the stats of the performance schema. While working, the customer raised two interesting questions: […]

This blog was originally published in June of 2023 and updated in April of 2024.As a MySQL database administrator, keeping a close eye on the performance of your MySQL server is crucial to ensure optimal database operations. A monitoring tool like Percona Monitoring and Management (PMM) is a popular choice among open source options for […]

ProxySQL recently released version 2.6.0, and going through the release notes, I focused on the following:Added support for caching_sha2_password!This is great news for the community! The caching_sha2_password authentication method for frontend connections is now available. This has been a long-awaited feature …Why?Because in MySQL 8, caching_sha2_password has been the default authentication method. Starting from MySQL […]