I'm working on a Spring Boot
app where I need to use both distributed (e.g. Hazelcast
) and local (e.g. Guava
) caches. Is there a way to configure Spring Cache to use both when using @Cacheable
and decide which implementation is needed based on the cache name?
I tried with creating a configuration for both HZ and Guava defining the cache names inside, but Spring complains that it couldn't find the cache name that is supposed to handled by HZ. When I use exclusively HZ or Guava they work.
Which implementation is needed based on the cache name?
Not based on the cache name, but yes - based on the CacheManager it is possible. Declare one of them as @Primary CacheManager
, as follows:
@Configuration
@EnableCaching
@PropertySource(value = { "classpath:/cache.properties" })
public class CacheConfig {
@Bean
@Primary
public CacheManager hazelcastCacheManager() {
ClientConfig config = new ClientConfig();
HazelcastInstance client = HazelcastClient.newHazelcastClient(config);
return new HazelcastCacheManager(client);
}
@Bean
public CacheManager guavaCacheManager() {
GuavaCacheManager cacheManager = new GuavaCacheManager("mycache");
CacheBuilder<Object, Object> cacheBuilder = CacheBuilder.newBuilder()
.maximumSize(100)
.expireAfterWrite(10, TimeUnit.MINUTES);
cacheManager.setCacheBuilder(cacheBuilder);
return cacheManager;
}
}
and specify it at class level as:
@Service
@CacheConfig(cacheManager="hazelcastCacheManager")
public class EmployeeServiceImpl implements IEmployeeService {
}
or at method level as:
@Service
public class EmployeeServiceImpl implements IEmployeeService {
@Override
@Cacheable(value = "EMPLOYEE_", key = "#id", cacheManager= "guavaCacheManager")
public Employee getEmployee(int id) {
return new Employee(id, "A");
}
}
If you have to stick with Cache name only, then you can multiple CacheManager.