This blog was originally published in January 2021 and updated in November of 2023.

As businesses and applications increasingly rely on MySQL databases to manage their critical data, ensuring data reliability and availability becomes paramount. In this age of digital information, robust backup and recovery strategies are the pillars on which the stability of applications stands.

In this blog, we will review all of the potential MySQL backup and restore strategies, the cornerstones of any application. When it comes to making the best choices for your specific setup, such as your topology and MySQL version, there are several options to explore, each requiring us to consider pertinent questions for informed decision-making.

Why Do MySQL Backups Matter?

MySQL backups play a pivotal role in safeguarding the integrity of your data, providing defense against various unforeseen calamities, hardware malfunctions, …

Percona University Online has released a new free course, “MySQL 5.7 End of Life Options – Free Course at Percona University Online,” by Dave Stokes, Technical Evangelist at Percona. 

Dave is the author of MySQL & JSON – A Practical Programming Guide. He started to work with MySQL from the 3.29 version and was a part of the MySQL Community Team for over a decade.

MySQL 5.7 reaches its End of Life in October 2023. The Era of MySQL 5.x will be over, and only MySQL 8.0 will be officially supported. Learn how to keep your database secure and performant after that date and what real options you have if you decide to upgrade or stay on the current version. 

This course consists of eight short videos. Pass a brief quiz on Google Classroom afterward to receive a Certificate of Completion from Percona. The …

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 …

Learn how Multi-Valued Indexing in MySQL 8.0 can enhance query performance by efficiently indexing and querying JSON arrays. Discover the benefits, implementation steps, and considerations for optimizing your MySQL database.

1. Multi-Valued Indexing in MySQL 8.0
2. Understanding Multi-Valued Indexes and their benefits
3. Creating Multi-Valued Indexes in MySQL …

Learn how to seamlessly add a new node to MySQL Group Replication from a backup. Scale your cluster, save time, and efficiently manage data updates and recoveries.

1. Hot Physical backup approach
2. Clone plugin approach
3. Logical backup approach

We highly recommend checking out our previous blog post on …

Thank you to everyone who joined us for the 20th edition of MyWebinar. We hope that our time together helped to elevate and seam your work to perfection. We’re committed to giving back to the opensource database community in the coming days by presenting more LIVE events.

Monu Mahto, Database Consultant from Mydbops was successful in making this event more interactive, engaging, and, most importantly, productive for the audience. Thank you for your continuous contribution to the opensource community.

Topic: MySQL Data Encryption at Rest

Date: 25th of March, 2023

Time: 11 AM IST

The most important key takeaways are:

What is Data-at-rest Encryption ?

Data at rest means all inactive data stored on disk. …

The End-of-Life (EOL) date for MySQL 5.7 is scheduled for October 2023, which means that after that date, MySQL 5.7 will no longer receive updates, bug fixes, or security patches. This does not mean that MySQL 5.7 will stop working after the EOL date, but it does mean that any issues or vulnerabilities discovered after that date will not be addressed, This can leave your database at risk of security breaches or performance issues. AWS RDS support for MySQL will also hold good only till October 2023.

To avoid these potential issues, it is recommended to upgrade to a newer version of MySQL before the EOL date for MySQL 5.7. Upgrading to a newer version such as MySQL 8 …

ProxySQL is an open-source MySQL proxy server, meaning it serves as an intermediary between a MySQL server and the applications that access its databases. ProxySQL can improve performance by distributing traffic among a pool of multiple database servers.

Consider 2 slaves are routed under Proxysql , In any one of the slave, if the replication is broken, we could still see the traffic routing to the broken replication slave. We can make Proxy to not send traffic to broken replication slave, by setting appropriate value to the variable mysql-monitor_slave_lag_when_null

…

Recently, while doing a test process to examine resource usage and the time required to alter the table using pt-osc, it leads to a loss of triggers even though the –preserve-triggers option is specified. I made the decision to recreate the identical circumstance so that everyone could see it.

Test environment : 

OS: Amazon Linux 2

MySQL version: 5.7.40

pt-online-schema-change version: 3.1.0

Before digging deeper, we must first obtain the whole picture. Here is an illustration of the table’s structure.

Table structure:

The Primary key is like the hero of a row, which has more beneficial features in the table while performing any task on the table.

The DBA knows the importance of the primary key in the table and how to handle it.

1. Notable features of having a primary key:
2. Requirements:
3. Enabling GIPK:
4. Handling GIPK:
…