Java Question
Using multiple cache implementations with Spring Cache
I'm working on a
Spring BootHazelcastGuava@CacheableI 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.
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Answer Source
Which implementation is needed based on the cache name?
Not based on the cache name but yes based on CacheManager its 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 on Cache name only then you can multiple CacheManager.
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