session-replay-tools/cetus

Free

Cetus is high-performance middleware designed to provide transparent routing between your application and backend MySQL servers.

FreeFree tier

Type

Open Source

Visit Website GitHub (38 stars)

About session-replay-tools/cetus

Cetus is high-performance database middleware developed in C for MySQL, providing transparent routing between applications and backend MySQL servers. It enables horizontal scaling and high availability with minimal application changes. Cetus offers two versions: read-write splitting and sharding. Key features include a multi-process lock-free architecture, transparent connection pooling, intelligent SQL routing, prepared statement support, result set compression, SSL/TLS (client-side), security management, status monitoring, and TCP stream processing. The sharding version adds data sharding, distributed transaction processing, bulk inserts, conditional DISTINCT, and a high-performance result set merging algorithm, plus MGR support. Cetus also ships auxiliary tools for dumpbinlog, scale-up, and XA hang handling, along with extensive documentation and Docker support.

Key Features

Multi-process lock-free design for improved efficiency

Transparent backend connection pooling

SQL read-write splitting

Prepared statement support

Result set compression

SSL/TLS support (client-side)

Security management and status monitoring

Data sharding (sharding version)

Distributed transaction processing (sharding version)

High-performance result set merging (sharding version)

Pros & Cons

Pros

High-performance C-based architecture
Multi-process lock-free design improves efficiency
Transparent to applications, minimal code changes required
Comprehensive features for both read-write splitting and sharding
SSL/TLS support for secure connections
Open source with active community on GitHub
Auxiliary tools for dumpbinlog, scale-up, and XA transaction handling

Cons

Strong read consistency marked as 'to be implemented'
C-based may have steeper learning curve for some teams
Community support primarily via GitHub issues
Requires careful configuration for production use

Best For

Horizontal scaling of MySQL databasesRead-write splitting to balance loadDatabase sharding for large datasetsHigh availability with transparent failoverProxy for legacy applications to scale without code changes

FAQ

What is Cetus?

Cetus is high-performance middleware developed in C for MySQL, providing transparent routing between applications and backend MySQL servers. It enables horizontal scaling and high availability with minimal application changes.

What are the two versions of Cetus?

Cetus offers two versions: read-write splitting and sharding. The read-write splitting version optimizes query distribution, while the sharding version adds data sharding and distributed transaction support.

Does Cetus support SSL/TLS?

Yes, Cetus supports SSL/TLS on the client side for secure connections.

Is Cetus production-ready?

For production environments, it is recommended to use the latest Release version available on GitHub.

Does Cetus support prepared statements?

Yes, Cetus supports prepared statements.

What auxiliary tools are included with Cetus?

Cetus includes auxiliary tools for dumpbinlog, scale-up, and XA hang handling, along with documentation and Docker support.