MySQL Replication Types
MySQL replication allows you to copy data from one MySQL database server (master) to another MySQL database server (slave). There are mainly two types of MySQL replication: synchronous and asynchronous.
Synchronous Replication
In synchronous replication, the master waits for the slave to acknowledge that it has received and written the data before it considers the write operation to be complete. This ensures that the data is consistent between the master and the slave.
- Consistency: High
- Latency: High (due to the acknowledgment process)
Asynchronous Replication
In asynchronous replication, the master writes the data to its binary log and then sends it to the slave. The slave applies the changes from the binary log as soon as it receives them. This means there might be a delay between the time a write operation is performed on the master and when it appears on the slave.
- Consistency: Moderate
- Latency: Low
Use Cases
- High Availability: Use synchronous replication for high availability solutions where data consistency is critical.
- Scalability: Use asynchronous replication for scaling out read operations, as the slave can handle more read queries.
For more information on MySQL replication, you can visit our MySQL Replication Guide.