Modern applications need to be highly available and easy to scale. A three-node MySQL InnoDB Cluster—built on MySQL Group Replication and connected through MySQL Router—provides a reliable way to support critical workloads. To set up this architecture, you start by deploying three MySQL server instances. In this example, the nodes are assigned the following hostname-to-IP […]

Before the MySQL & HeatWave Summit, we released MySQL 9.3, the latest Innovation Release. The event was terrific, and I had the chance to meet some of the MySQL contributors. As usual, we released bug fixes for 8.0 and 8.4 LTS, but I focus on the newest release in this post. We included patches and […]

Before the MySQL & HeatWave Summit, we released MySQL 9.3, the latest Innovation Release. The event was terrific, and I had the chance to meet some of the MySQL contributors. As usual, we released bug fixes for 8.0 and 8.4 LTS, but I focus on the newest release in this post.We included patches and code […]

Innodb Cluster or ClusterSet topologies already have secondary instances that can act as a failover for primary or also offload read requests. However, with MySQL 8.4, we now have the feasibility of adding a separate async replica to the cluster for serving various special/ad-hoc queries or some reporting purposes. This will also help offload read traffic away […]

Scalable systems live or die by schema clarity. That’s why most engineers now use database diagram tools to map, manage, and document their structures. But not all tools are built for modern, fast-moving teams. Here’s a look at the top database diagram tools making a difference in 2025.

The post Best Database Diagram Tools–Free and Paid  appeared first on Devart Blog.

In this blog, I am going to explain the complete process involved in the MySQL group replication setup using SSL. The blog covers the complete MySQL config files as well as steps. I used the following aspects for my testing purpose.

• MySQL 9.3.0 Inn ovation release
• Ubuntu 24.10
• 3 physical servers

I also enabled the hostname based authentications between the three VMs. So that, I don’t need to provide the IPs explicitly each time. To achieve this, I used to update the the file “/etc/hosts” with following entries.

root@gr1:~# cat /etc/hosts | grep gr
198.19.249.194 gr1 gr1
198.19.249.116 gr2 gr2
198.19.249.163 gr3 gr3

---- Test
root@gr1:~# telnet gr2 3306
Trying 198.19.249.116...
Connected to gr2.
---- Works!

Creating SSL certificates:

As I am going to setting up the SSL based group replication, I need to create the required certificates …

Announcing Vitess 22 # The Vitess maintainers are happy to announce the release of version 22.0.0, along with version 2.15.0 of the Vitess Kubernetes Operator. This release is the first to benefit from a 6-month-long development cycle, after our recent change to the release cadence. Version 22.0.0 comes with significant enhancements to query serving and cluster management. These changes have allowed Vitess to be more performant and easier to operate compared to version 21.

Recently, a friend reached out to me for help after encountering an error while restoring a MySQL dump during an upgrade from MySQL 8.0 to 8.4. The error read: At…

The post A Unique Foreign Key issue in MySQL 8.4 first appeared on Change Is Inevitable.

Recently, I encountered a Percona Monitoring and Management (PMM) server that was rapidly approaching complete disk exhaustion. This post outlines the steps taken to identify the issue and reclaim disk…

The post How to Resolve Disk Space Issues in PMM: Case Study first appeared on Change Is Inevitable.

When using the Percona Operator for MySQL based on Percona XtraDB Cluster (PXC), it’s common to encounter scenarios where cluster nodes request a full State Snapshot Transfer (SST) when rejoining the cluster. One typical scenario where a State Snapshot Transfer (SST) is required is when a node has been offline long enough that the GCache […]