Administration

The Truth About PostgreSQL Constraints

Michael Patrick McCoy

Most developers think they understand database constraints — until PostgreSQL politely corrects them. Constraints aren’t just rules. They’re guarantees. They tell PostgreSQL what must be true at all times. And when constraints are designed well, your data stays clean and your application becomes dramatically safer!


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Index Maintenance: REINDEX, Index Bloat, and When to Rebuild

Michael Patrick McCoy

PostgreSQL indexes are like closets. You start with them neat and organized… and then six months later you’re wondering why the door won’t close and why everything takes longer to find. That digital mess is called index bloat, and managing it is one of the most underrated responsibilities of a PostgreSQL DBA.


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PostgreSQL Extensions Worth Installing

Michael Patrick McCoy

PostgreSQL’s extension system is one of its greatest strengths. From performance tuning with pg_stat_statements to UUID generation, encryption, and even geospatial queries with PostGIS, here are the extensions every developer should know!


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How to Safely Delete Rows in Production Without Causing Chaos

Michael Patrick McCoy

Need to delete rows in production? One wrong DELETE can wreck your app. This article shows the safe, battle-tested steps pros use to avoid outages and regrets.


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PostgreSQL Locking for Humans

Michael Patrick McCoy

PostgreSQL locking feels scary — mostly because the documentation lists 15 different lock modes, half of which sound like they were named during a caffeine-fueled meeting. But here’s the truth: you only need to understand a few key concepts to debug almost every lock issue you’ll ever encounter.


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PostgreSQL Data Types You’re Probably Using Wrong

Michael Patrick McCoy

PostgreSQL gives you a huge toolbox of data types, which is great — until you accidentally pick the wrong one and end up fighting performance issues, storage problems, or subtle bugs that show up months later. In this article, we’ll go over the four data type pairs developers misuse the most, and I’ll show you the simple rules that will keep your schemas clean and your data correct.


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