MyBatis Second-Level Cache Configuration Guide

The MyBatis second-level cache is a cross-session cache that helps reduce the number of database accesses and improve system performance. When configuring the MyBatis second-level cache, there are several key things to keep in mind.

1. Enable secondary cache: Activate the secondary cache in the MyBatis configuration file and configure it.
2. Configure caching strategy: you can choose to use the default caching implementation or customize your own. Common caching implementations include Ehcache, Redis, etc.
3. Serialization of cached objects: MyBatis’s second-level cache requires serialization and deserialization operations on cached objects, so it is necessary to ensure that the cached objects are serializable.
4. Preventing cache penetration: When configuring secondary caches, it is necessary to consider how to avoid cache penetration issues, which can be achieved by using technologies such as Bloom filters for preprocessing cache keys.
5. Configure for different scenarios: Based on different query scenarios, the second-level cache can be finely configured, such as setting cache expiration time, cache refresh strategy, etc.
6. Implement cache clearing strategy: When using secondary cache, it is important to consider how the cache will be cleared. This can be done through scheduled cache clearing or manual cache clearing based on business needs.
7. Testing and Monitoring: After configuring the secondary cache, it is important to conduct testing and monitoring to ensure the proper functioning of the caching system and promptly address any cache-related issues that may arise.