alibaba/cobar

Health v2 · maintenance only

Adoption not part of the score

3187 stars · 1202 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Cobar is a database proxy from Alibaba that shards MySQL databases and tables, speaking the MySQL protocol so applications can use it as a drop-in MySQL replacement. It supports adding MySQL instances as the business grows and provides high availability through clustering of both the proxy and underlying MySQL nodes.

Use cases

• shard a large MySQL database across multiple instances
• scale MySQL horizontally as data grows
• split large tables across MySQL servers transparently
• add a proxy layer in front of MySQL without changing application code
• achieve high availability for MySQL-backed services

When to choose

• your application uses MySQL and you need transparent horizontal sharding
• you want to scale MySQL without modifying client code
• you need a battle-tested proxy layer compatible with the MySQL protocol

When to avoid

• you use databases other than MySQL as the underlying storage
• you need advanced SQL features or complex cross-shard transactions
• you want an actively developed project with modern community support

Facets

service · maturity maintenance

database proxy routing http-server databases backend microservices jvm self-hosted database-sharding mysql-proxy middleware horizontal-scaling high-availability linux

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markdown · JSON · MCP: product_card(name="alibaba/cobar")