Should Backend Developers Focus on SQL or NoSQL in 2025?

Honestly, SQL databases are still a reliable go-to. If you're starting out, consider using Postgres for a server setup or SQLite for something more lightweight. SQL databases nowadays even have strong support for JSON, so they can handle a lot more than just relational data. NoSQL definitely has its place, especially for specific uses like caching or full-text search, but most projects will benefit more from a solid SQL foundation. Also, understanding SQL opens doors since it’s pretty standard across various systems, unlike the many different NoSQL options out there.

It's surprising to me that NoSQL is even considered by some as a go-to choice when most data is relational. SQL databases are still powerful and can be adapted to work with non-relational data when necessary.

Starting with SQL is a great idea. It gives you a strong base and a good understanding of database concepts. Plus, as a backend dev, having solid SQL skills is essential for various applications. NoSQL can come into play later as you work on specialized projects.

I'd say learn both! You can get the basics of each pretty quickly, and that way you'll be prepared for different project needs. Knowing both SQL and NoSQL gives you flexibility in your skillset, making you more marketable.