As businesses grow and develop, the requirements that they have for their data platform grow along with it. As such, one of the more common questions I get from my clients is whether or not their system will be able to endure an anticipated load increase. Or worse yet, sometimes I get questions about regaining normal operations after a traffic increase caused performance destabilization.

As the subject of this blog post suggests, this all comes down to proper capacity planning. Unfortunately, this topic is more of an art than a science, given that there is really no foolproof algorithm or approach that can tell you exactly where you might hit a bottleneck with server performance. But we can discuss common bottlenecks, how to assess them, and have a better understanding as to why proactive monitoring is so important when it comes to responding to traffic growth.

Hardware considerations

The first thing we have to consider …

In InnoDB, the undo log and the redo log are two indispensable components that play a vital role in maintaining data integrity and ensuring transactional consistency. Both logs are crucial in the ACID (Atomicity, Consistency, Isolation, Durability) properties of database systems. Additionally, they are essential for the Multi-Version Concurrency Control (MVCC) mechanism. In this blog post, we will delve into the differences between the InnoDB undo log and redo log, exploring their significance and providing code examples to illustrate their usage.

InnoDB Undo Log

The undo log, also known as the rollback segment, is a crucial part of the InnoDB storage engine. Its primary purpose is to support transactional consistency and provide the ability to …

This blog was originally published in July 2017 and was updated in August 2023.

It’s a pretty common question around here, so let’s see what we can do about that.

So, What is MySQL Partitioning?

Partitioning is a way in which a database (MySQL in this case) splits its actual data down into separate tables but still gets treated as a single table by the SQL layer.

When partitioning in MySQL, it’s a good idea to find a natural partition key. You want to ensure that table lookups go to the correct partition or group of partitions. This means that all SELECT, UPDATE, and DELETE should include that column in the WHERE clause. Otherwise, the storage engine does a scatter-gather and queries ALL partitions in a UNION that is not concurrent.

Generally, you must add the partition key into the primary key along …

As was already announced by the Oracle ACE team on July 24, 2023, it is our great pleasure to introduce MySQL ACEs to the MySQL community for the period 2023-2024. Our new MySQL ACEs for this year are: Congratulations to all Oracle ACEs for MySQL !  

Announcing the 2023-2024 Oracle MySQL ACE Program Members

In this article, I want to discuss a couple of pretty new features in MySQL 8.0 — and an older one. Maybe these are minor features you are not aware of, and maybe not so relevant, to be honest. But it is worth providing a quick overview, showing how they work, and how they could be useful in some cases.

All refer to the invisibility of something:

• Invisible columns
• Generated invisible primary keys
• Invisible indexes

Let’s take a look.

Invisible columns

The invisible columns feature has been deployed since version 8.0.23. What is an invisible column? It’s basically a regular column of a table with its own name and data type. It is treated and updated as any other regular column, with the only difference being that it is invisible to the application. In other words, it can be accessed only in the case it is explicitly addressed in your SELECT; otherwise, it is …

The latest release of MySQL (July 18th, 2023) marks a new era for the most popular Open Source database, with the very first Innovation Release (8.1.0). More will follow before MySQL’s very first LTS Release sees the light of day. This new Innovation Release already contains contributions from our great Community. MySQL 8.1.0 contains patches […]

The first MySQL Innovation Release is out ! Thank you to all contributors !

The latest release of MySQL (July 18th, 2023) marks a new era for the most popular Open Source database, with the very first Innovation Release (8.1.0). More will follow before MySQL’s very first LTS Release sees the light of day.

This new Innovation Release already contains contributions from our great Community. MySQL 8.1.0 contains patches from Meta, Allen Long, Daniël van Eeden, Brent Gardner, Yura Sorokin (Percona) and Kento Takeuchi.

Let’s have a look at all these contributions:

MySQL Connector Python

• #93643 – Contribution: fix recv compress bug – Allen Long
…

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