Yes, but now it likes them more, and here is why.IntroUsing 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 simple example […]

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 questions […]

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 8 […]

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 MySQL […]

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 to […]

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: how […]

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 […]

Any Galera documentation about limitations will state that tables must have primary keys. They state that DELETEs are unsupported and other DMLs could have unwanted side-effects such as inconsistent ordering: rows can appear in different order on different nodes in your cluster.If you are not actively relying on row orders, this could seem acceptable. Deletes […]

You know about MySQL; we know about MySQL. After all, it’s been the most popular database system for years now. And now that we have that out of the way, on to the more important stuff!Because MySQL is so popular, you might be considering migrating your database to MySQL Community Edition or MySQL Enterprise. If […]