CODEWITHSUNDEEP
springcachingredis
Pardha.Saradhi
Pardha.Saradhi

Reputation: 478

Spring KeyGenerator For Appending Cache name to the key

I am using spring cache with Redis for caching

I have the following methods:

    @CachePut(value ="DATA1", key = "#key1")
    public Object saveData1(long key1, Object obj) {
        return obj;
    }


    @CachePut(value ="DATA2", key = "#key1")
    public Object saveData2(long key1, Object obj) {
        return obj;
    }

This is causing collisions in keys and the data is being overridden.

I want to generate the key with the cache name appended to it.

Like: DATA1-key1, DATA2-key1.

Is it possible?

I have seen a few examples which use class name and method name. But I want to use the cache name.

Thank you.

Upvotes: 2

Views: 4582

Answers (2)

arjunagarwal
arjunagarwal

Reputation: 391

You need to set parameter "usePrefix" as true in your CacheManager bean. This will prepend cacheName in your keys.

<bean id="cacheManager" class="org.springframework.data.redis.cache.RedisCacheManager">
    ...
     <property name="usePrefix"><value>true</value></property>
    ...
</bean>

Upvotes: 1

Monzurul Shimul
Monzurul Shimul

Reputation: 8396

Create a custom key generator like this:

@Component("myKeyGenerator")
public class MyKeyGenerator implements KeyGenerator {
    public Object generate(Object target, Method method, Object... params) {
        String[] value = new String[1];
        long key;
        CachePut cachePut = method.getAnnotation(CachePut.class);
        if (cachePut != null) {
            value = cachePut.value();
        }
        key = (long) params[0];
        return value[0] + "-" + key;
    }
}

And use it like below:

@CachePut(value = "DATA1", keyGenerator = "myKeyGenerator")

I haven't test this but should work, atleast you will get a basic idea how to do it.

Upvotes: 4

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