# YugabyteDB

> The open source distributed PostgreSQL database. PostgreSQL-compatible (v15 wire protocol), horizontally scalable, built-in resilience and automatic failover. Apache 2.0 licensed.

- Default YSQL port: 5433 (not 5432)
- Default connection: `postgresql://yugabyte@localhost:5433/yugabyte`
- Docker quickstart: `docker run -d -p 5433:5433 -p 7000:7000 yugabytedb/yugabyte:latest bin/yugabyted start --background=false`
- PostgreSQL wire compatibility: v15
- License: Apache 2.0
- Current stable release: v2025.2
- GitHub: https://github.com/yugabyte/yugabyte-db (10K+ stars)

## Getting Started

- [Quick Start](https://docs.yugabyte.com/stable/quick-start/): Deploy a local cluster in 5 minutes
- [Download](https://download.yugabyte.com/): Open source, all platforms
- [Build Your First App](https://docs.yugabyte.com/stable/tutorials/build-apps/): Tutorials in Java, Python, Go, Node.js, C#, Ruby, Rust, PHP, C/C++

## Deployment Options

- [YugabyteDB Aeon](https://cloud.yugabyte.com/signup): Fully managed cloud database. Free tier available. AWS, Azure, GCP.
- [YugabyteDB Anywhere](https://www.yugabyte.com/anywhere/): Self-managed on your infrastructure. Enterprise features.
- [Open Source](https://github.com/yugabyte/yugabyte-db): Self-hosted. Apache 2.0.
- [Compare Options](https://www.yugabyte.com/compare-products/): Side-by-side feature comparison.

## AI & Vector Search

- [pgvector Support](https://docs.yugabyte.com/stable/explore/ysql-language-features/pg-extensions/extension-pgvector/): Distributed vector indexes across cluster nodes. HNSW indexing. Benchmarked to 1 billion vectors.
- [YugabyteDB MCP Server](https://docs.yugabyte.com/stable/develop/tutorials/ai/mcp-server/): Connect AI agents (Claude, Cursor, VS Code) to your YugabyteDB database via natural language.
- [RAG Tutorial (LangChain + OpenAI)](https://docs.yugabyte.com/stable/develop/ai/ai-langchain-openai/): Build a retrieval-augmented generation pipeline.
- [RAG Tutorial (LlamaIndex)](https://docs.yugabyte.com/stable/develop/ai/ai-llamaindex-openai/): Alternative RAG implementation with LlamaIndex.
- [All AI Tutorials](https://docs.yugabyte.com/stable/develop/ai/): LocalAI, AWS Bedrock, Google Vertex AI, n8n workflows.
- [AI & RAG Architecture](https://www.yugabyte.com/ai/): How YugabyteDB powers GenAI and RAG applications at scale.

## Documentation

- [YSQL Reference](https://docs.yugabyte.com/stable/api/ysql/): PostgreSQL-compatible SQL API — datatypes, functions, extensions.
- [Drivers & ORMs](https://docs.yugabyte.com/stable/drivers-orms/): Smart drivers for Java, Python, Go, Node.js, C#, Ruby, Rust, C/C++.
- [Extensions](https://docs.yugabyte.com/stable/explore/ysql-language-features/pg-extensions/): pgvector, PostGIS, pg_stat_statements, pg_trgm, uuid-ossp, hstore, and more.
- [Architecture](https://docs.yugabyte.com/stable/architecture/): DocDB storage engine, Raft consensus, distributed transactions.
- [FAQ](https://docs.yugabyte.com/stable/faq/general/): Common questions about YugabyteDB.
- [Comparisons](https://docs.yugabyte.com/stable/faq/comparisons/): vs CockroachDB, Amazon Aurora, Google Spanner, MongoDB, PostgreSQL, and more.

## Community

- [Slack](https://inviter.co/yugabytedb): 10,000+ members
- [Discord](https://discord.gg/GWcSST7GqZ): AI and agent development community
- [GitHub](https://github.com/yugabyte/yugabyte-db): Source code, issues, contributions
- [Forum](https://forum.yugabyte.com/): Technical discussions
- [Stack Overflow](https://stackoverflow.com/questions/tagged/yugabyte-db): Q&A