Building a Semantic Similarity Search API with FastAPI, Sentence-BERT, and PostgreSQL pgvector

In this article, I share how I built a semantic similarity search API using FastAPI, Sentence-BERT (SBERT), and PostgreSQL with pgvector.
The idea was to test whether we can achieve context-aware text search directly inside Postgres, without adding a separate vector database.
It turned out to be a simple yet powerful setup — perfect for real-world applications and quick POCs alike.

Full Detailed Implementation: Read the complete walkthrough here →