Vector Databases: A Guide for Engineers

## The New Database Paradigm
Traditional relational databases are often ill-equipped for the high-dimensional comparisons required by modern AI. Vector databases solve this by indexing embeddings for similarity search.

### Comparing the Giants
1. **Pinecone**: Fully managed, high performance, but closed source.
2. **Milvus**: Open source, highly scalable, but complex to manage.
3. **pgvector**: An extension for PostgreSQL, great for keeping data in one place.

### Performance Tuning
Properly configuring index parameters (like HNSW) is crucial for balancing search speed and accuracy.