Antivirus jumps shark. Cryptomining!

Well, holy cow. Now two different antivirus packages include code to use their hosts’ idle cycles to mine cryptocurrency. Users must opt in to both. But still, if computers were horses we’d say they had parasites and treat them with horse paste (aka Invermectin) to get rid of them. These antivirus packages give our computers … Read more

WordPress plugin release tools

When developing WordPress plugin for distribution on the wordpress.org directory, we need some tools to automate the release process. It’s convenient to use github (or another source-code control vendor) to hold the day-to-day development source code. And, when we’re ready to release the plugin to the WordPress repository, we need to use WordPress’s Subversion (svn) … Read more

Reindexing tables with bad dates

Sometimes, upon adding indexes to MariaDb or MySQL tables with columns with zero-default dates you’ll get an error message like this: This happens because your server’s default sql_mode includes the NO_ZERO_DATE value. It is prevalent when working on WordPress indexes using phpmyadmin or some other MySQL client program. To prevent it, change the sql_mode before … Read more

Real users slow applications down

Anybody who’s worked with databases knows this: as they grow they can slow down. It’s the curse of the customer base. Successful applications gather users and other transactional data. In this article I’m using MySQL database queries based on WordPress’s database design. Still, the ideas in this article apply to every application built on any … Read more

Capturing and examining queries

This entry is part 2 of 2 in the series WordPress MySQL performance monitor

It’s straightforward to get WordPress to capture the MySQL queries it uses to generate each page view. We can then analyze the captured queries. Capturing WordPress offers a way to capture a list of the database queries it uses in each page view. It’s simple: define the global SAVEQUERIES symbol. You can define it permanently … Read more

Analyzing WordPress database operations

This entry is part 1 of 2 in the series WordPress MySQL performance monitor

People are using the Index WP MySQL For Speed WordPress plugin! That’s great. But it shoots into the dark: nobody can tell how much improvement they’ve seen except subjectively. That’s not good. It’s hard to improve something unless we can actually measure it. Two things can make a troublesome query. If it runs just once … Read more