Spring Cache中的@Cacheable将值存储在cache外部的redis中。 如何将它放入Redis的缓存中？

Question

@Override
@Cacheable("stu")
public EmployeeEntity getEmployee(Integer id) {

    return employeeDAO.findById(id).get(); 
} 

Above code save the key in redis in this format "stu::7" here "stu" is the name of the cache and 7 is the key but it stores the cache name and id as one key.

but i want to store in this format in redis STU ->7 Stu should be name of the cache and inside that all the key value pair.

Answer 1

It's strange, because docs tell that

Default is "", meaning all method parameters are considered as a key, unless a custom keyGenerator() has been configured.

It's trivially, but try to set key and cache name explicitly if you don't try it before

@Cacheable(value = "stu", key = "{#id}")
public EmployeeEntity getEmployee(Integer id) {
    return employeeDAO.findById(id).get(); 
} 

Answer 2

You can set custom key generator to @Cacheable annotation where you can customise it as you want: https://docs.spring.io/spring-framework/docs/current/javadoc-api/org/springframework/cache/annotation/Cacheable.html#keyGenerator--

@Cacheable(value = "stu", keyGenerator = "customKeyGenerator")

Where customKeyGenerator is the name of your custom key generator bean.