On 5 May 2020, GitHub had a 2 hours and 24 minutes downtime caused by AUTO_INCREMENT values. Let’s see how to avoid these incidents.
MariaDB made several improvements to the DROP TABLE statement.
MariaDB supports INSERT RETURNING and DELETE RETURNING, which help avoid an additional SELECT.
MySQL backups can be made in several ways. Each method has pro’s and con’s.
Aria is a MariaDB storage engine that is always used internally. Its pagecache is the equivalent of InnoDB buffer pool, and this article is about sizing it properly.
It’s not easy to find out if InnoDB Buffer Pool is oversized. However shrinking it could greatly reduce the resources we need and pay, and even improve performance.
InnoDB buffer pool is the most important memory area to allocate to get decent performance. Let’s see how to check if it’s big enough.
In MySQL/MariaDB one has to use ALTER TABLE to set a table comment. This is a problem in many situations.
MySQL logs slow queries into the Slow Log. But it’s preferable to log all the queries, not just some of them. This article shows how to log all available information.
Invisible columns are columns that are not returned by a SELECT *. Their use cases are not obvious.