MySQL replication (replication) is a critical mechanism for data redundancy, high availability, and horizontal scaling. The architecture typically involves master and slave servers working in tandem to synchronize data. Here's a breakdown:

Key Components 🛠️

  • Master Server

    • Accepts write operations and logs changes to the binary log.
    • Uses mysqldump or direct replication for data transfer.
    master_slave_replication

  • Slave Server

    • Applies updates from the master via I/O Thread and SQL Thread.
    • Supports read-only operations for load balancing.
    replication_architecture

Replication Types 🔄

  • Asynchronous Replication
    • Default mode; master does not wait for slave acknowledgment.
  • Semi-Synchronous Replication
    • Ensures at least one slave acknowledges receipt before commit.
  • Group Replication
    • Multi-master topology with automatic data synchronization across nodes.
    mysql_replication

Best Practices 📌

  • Use SHOW SLAVE STATUS to monitor replication health.
  • Enable SSL for secure data transmission between servers.
  • Refer to MySQL官方文档 for advanced configurations.

For deeper insights into replication strategies, explore our MySQL Tools Guide. 🚀