Tag: MySQL

When you have multiple database servers working together as nodes in a cluster, it’s beneficial to understand how data consistency is established. In this post, we’re going to take a look at the various cluster consistency levels that you can…

(This is the third of a series of blog posts covering MariaDB Temporal Tables. The first and second in the series introduced the topic.)  “Who are you?” said the Caterpillar. This was not an encouraging opening for a conversation. Alice…

(This is the second of a series of blog posts covering MariaDB Temporal Tables. The first blog post can be found here.) There are really four dimensions, three which we call the three planes of Space, and a fourth, Time….

(This is the first of a series of blog posts covering MariaDB Temporal Tables.) “You must remember this, a kiss is still a kiss. A sigh is just a sigh; the fundamental things apply, as time goes by.” Sam (Dooley…

It’s not uncommon these days for us to use a high availability stack for MySQL consisting of Orchestrator, Consul, and ProxySQL. You can read more details about this stack by reading Matthias Crauwels’ blog post How To Autoscale ProxySQL In…

In this post, we will explore one approach to MySQL high availability with ProxySQL, Consul and Orchestrator. This is a follow up to my previous post about a similar architecture but using HAProxy instead. I’ve re-used some of the content…

Percona Live is always a great opportunity to learn from the best and brightest in the open-source database community. This time, Percona Live Europe is being held at the Hilton Amsterdam Airport Schiphol, The Netherlands from September 30 to October…

On October 3rd ProxySQL will have it’s very first technology day. They have chosen the lovely city of Ghent, Belgium, my home town, as the place to be. For those attending Percona Live Europe in Amsterdam, this is a great…

A commonly encountered scenario is when EBS volumes are not performing at the expected theoretical performance. Let’s look at some of the potential reasons for that and how we can “fix” it. (When I say EBS volume, I am talking…

Disable SELinux? Think again! SELinux is always a complicated topic. If you search this on the web, most people will advise just disabling it, but that may not be acceptable from a security point of view in your organization. In…