PostgreSQL

What is PostgreSQL?

An advanced, open-source object-relational database system with over 35 years of active development. Known for its reliability, data integrity, and robust feature set. Supports SQL and JSON querying, ACID compliance, and advanced data types including arrays, hstore, and JSONB. Features excellent performance, extensibility, and standards compliance. Powers major applications like Instagram, Spotify, and Apple. Considered one of the most advanced open-source databases available.

When to use it

• Ideal as a primary database for web applications requiring complex queries, data integrity, and ACID compliance.
• Perfect for applications with complex relationships, geospatial data, or JSON document storage needs.
• Excellent for data warehousing, analytics, and applications requiring advanced features like full-text search or custom data types.
• Commonly used in enterprise applications, financial systems, and when you need a reliable, feature-rich database.

When NOT to use it

• Simple key-value storage needs - Redis or Memcached are better
• When you need horizontal scaling without sharding - consider NoSQL
• Applications with frequently changing schemas - MongoDB might be easier
• When you need maximum write performance at scale - consider specialized solutions

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