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Don't do this: creating useless indexes

This is why, when I’m called for a performance problem (or for an audit), my first take is to look at the size of the data compared to the size of the indexes. If you store more indexes than data for a transactional workload, that’s bad. The worst I’ve seen was a database with 12 times more indexes stored on disk than data! Of course, it was a transactional workload… Would you buy a cooking book with 10 pages of recipes and 120 pages of indexes at the end of the book?

The problem with indexes is that each time you write (insert, update, delete), you will have to write to the indexes too! That can become very costly in resources and time.


PXP is a superset of the PHP programming language. It is heavily inspired by the goals of the TypeScript project and aims to improve and enhance PHP with transpilation.

Functional Classes

A place for everything, and everything in its place.

What is a class? According to the dictionary a class is:

A set, collection, group, or configuration containing members regarded as having certain attributes or traits in common; a kind or category.

The Simple Class

I work in many legacy code bases, and in fact, I’ve made it a big part of my career. I love diving into big monoliths that have grown out of proportion and tidying them up. One of the best parts of that work is rewriting a God class into a collection of small reusable classes. Let’s take a look at what makes a simple class great.

The economics of clean code

Code smarter. Code balanced. That is OK to have some debt. But pay them off quickly.

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