In this blog post, we will see how to use perf (a.k.a.: perf_events) together with Flame Graphs. They are used to generate a graphical representation of what functions are being called within our software of choice. Percona Server for MySQL is used here, but it can be extended to any software you can take […]Read more
I often need to install a certain version of MySQL, MariaDB, or Percona Server for MySQL to run some experiments, whether to check for behavior differences or to provide tested instructions. In this blog series, I will look into how you can install MySQL, MariaDB, or Percona Server for MySQL with Docker. This post, […]Read more
Recently I was doing some small testing by using EC2 instances on AWS and I noticed the execution time and performance highly depend on which time of the day I am running my scripts. I was using t3.xlarge instance type as I didn’t need many CPUs and memory for my tests, but from time […]Read more
Some say that the best password is the one you don’t have to remember. That’s possible with MySQL, thanks to the auth_socket plugin and its MariaDB version unix_socket.
Neither of these plugins is new, and some words have been written about the auth_socket on this blog before, for example: how to change passwords in MySQL […]
In MySQL 8.0.18 there is a new feature called how it works under the hood.
The high-level basics are the following: if there is a join, it will create an in-memory hash table based on one of the tables and will read the other table row by row, calculate a hash, and do a lookup […]