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Do Not Upgrade to Any Version of MySQL After 8.0.37
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
Upgrading to MySQL 8: Embrace the Challenge
Nobody likes change, especially when that change may be challenging. When faced with a technical challenge, I try to remember this comment from Theodore Roosevelt: “Nothing in the world is worth having or worth doing unless it means effort, pain, difficulty.” While this is a bit of an exaggeration, in this case, the main concept is still valid. We shouldn’t shy away from an upgrade path because
Need to Connect to a Local MySQL Server? Use Unix Domain Socket!
When connecting to a local MySQL instance, you have two commonly used methods: use TCP/IP protocol to connect to local address – “localhost” or 127.0.0.1 – or use Unix Domain Socket. If you have a choice (if your application supports both methods), use Unix Domain Socket as this is both more secure and more efficient. How much more efficient, though? I have not looked at this topic in years, so
Introduction to MySQL 8.0 Common Table Expressions (Part 1)
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ClickHouse and MySQL - Better Together
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
Understanding Hash Joins in MySQL 8
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
Basic Housekeeping for MySQL Indexes
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
Use MySQL Without a Password (and Still be Secure)
All of Percona’s open-source software products, in one place, to download as much or as little as you need.
Parallelism in PostgreSQL
PostgreSQL is one of the finest object-relational databases, and its architecture is process-based instead of thread-based. While almost all the current database systems utilize threads for parallelism, PostgreSQL’s process-based architecture was implemented prior to POSIX threads. PostgreSQL launches a process “postmaster” on startup, and after that spans new process whenever a new client connect
Nondeterministic Functions in MySQL (i.e. rand) Can Surprise You
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Tuning InnoDB Primary Keys - Percona Database Performance Blog
The choice of good InnoDB primary keys is a critical performance tuning decision. This post will guide you through the steps of choosing the best primary key depending on your workload. As a principal architect at Percona, one of my main duties is to tune customer databases. There are many aspects related to performance tuning which make the job complex and very interesting. In this post, I want t
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Using Explain Analyze in MySQL 8