I have used both MySQL and PostgreSQL on production projects. My honest take: for most web applications, either one works fine. The choice matters less than people think. But there are real differences, and knowing them helps you pick the right one.
MySQL: the safe default
MySQL is the most widely used open-source database in the world. It powers WordPress, Wikipedia, Facebook (at massive scale), and millions of web apps.
It is fast for read-heavy workloads, simple to set up, and supported everywhere — including cheap shared hosting. If you are building a standard web app with Laravel, MySQL is a perfectly good choice.
The one thing MySQL is known for being loose about: data types. Historically, MySQL would silently accept invalid data rather than throwing an error. Modern MySQL with strict mode enabled fixes most of this, but PostgreSQL has always been stricter.
PostgreSQL: the feature-rich choice
PostgreSQL is often described as the most standards-compliant open-source database. It supports more advanced SQL features, handles complex queries better, and has excellent support for JSON data.
If you need to store and query JSON documents efficiently, PostgreSQL's JSONB type is genuinely excellent. You can index inside JSON fields and query them with full SQL power. MySQL's JSON support exists but is less mature.
PostgreSQL also handles concurrent writes better than MySQL in many scenarios, which matters for write-heavy applications.
The practical differences
For a typical Laravel CRUD application, you will not notice a performance difference between the two. Both handle millions of rows without breaking a sweat when properly indexed.
Where you will notice a difference:
Complex queries: PostgreSQL's query planner is generally smarter. Queries with multiple joins and subqueries often run faster on PostgreSQL.
JSON data: If your app stores a lot of semi-structured data in JSON columns, PostgreSQL is significantly better.
Geospatial data: PostgreSQL with the PostGIS extension is the industry standard for location-based queries. MySQL's spatial support is basic by comparison.
Hosting: MySQL is available on almost every hosting provider, including cheap shared hosting. PostgreSQL is less common on budget hosting.
My recommendation
If you are building a standard web app and do not have specific requirements, use MySQL. It is simpler, more widely supported, and you will find more tutorials and Stack Overflow answers for it.
If you are storing JSON data, need complex queries, or are building something data-intensive, use PostgreSQL. The extra setup is worth it.
If you are already using one and it is working fine, do not switch. The migration cost is rarely worth it.
