Prompt
Should I use PostgreSQL or MariaDB for a new product?
Latest observation
Oct 7, 2026
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For a new product, I’d usually recommend PostgreSQL unless you have a specific reason to choose MariaDB.
Why PostgreSQL is often the better default
- Stronger feature set: great support for complex queries, JSON, window functions, CTEs, partial indexes, etc.
- Better standards compliance: tends to behave more predictably and is less “surprising.”
- Excellent reliability and correctness: very strong reputation for data integrity.
- Flexible enough for many use cases: works well for traditional relational apps, analytics-ish workloads, and semi-structured data.
- Large ecosystem and mindshare: lots of tooling, cloud support, and community adoption.
When MariaDB might be a good choice
- You’re already using MySQL/MariaDB and want compatibility or a low-friction migration.
- Your team has strong MySQL/MariaDB experience and limited PostgreSQL expertise.
- The app is fairly simple CRUD and you want to optimize for familiarity over advanced capabilities.
- You depend on specific MariaDB/MySQL behavior or tooling.
Practical rule of thumb
- Choose PostgreSQL for most new applications.
- Choose MariaDB if you need MySQL compatibility, your hosting/tooling already centers around it, or your team knows it much better.
If you want, I can also give you a decision matrix based on your app type (SaaS, ecommerce, analytics, high-write, etc.).
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