Package com.easydesk.cache.aspect

Class CachedAspect

java.lang.Object
com.easydesk.cache.aspect.CachedAspect
All Implemented Interfaces:
org.aopalliance.aop.Advice, org.aopalliance.intercept.Interceptor, org.aopalliance.intercept.MethodInterceptor
@Component public class CachedAspect extends Object implements org.aopalliance.intercept.MethodInterceptor
Implements Cached using Spring AOP. Intercepts calls to any @Cached-annotated method, and either returns the cached result or runs the method and caches what it returns.

Notably, this class never needs to figure out "what method am I currently in" by walking the stack -- JoinPoint.getSignature() hands over the Method object directly, because Spring AOP is already intercepting the call at the one point where that's known for free. This is the general reason AOP-based caching (Spring's own @Cacheable, JSR-107's @CacheResult, this class) never needs StackWalker-style introspection.

Cache key construction: the key combines the target class name, method name, and Arrays.deepHashCode(Object[]) of the arguments -- not their toString(). This means correctness depends on the arguments having proper, value-based equals()/ hashCode() (true for String, boxed numerics, enums, records, and most well-behaved value types). As with any hash-based key, there is a theoretical (astronomically unlikely) chance of two different argument combinations colliding on the same hash and sharing a cache entry. If a particular method's correctness can't tolerate that risk at all, don't annotate it -- cache it manually instead.

  • Constructor Details

  • Method Details

    • invoke

      public Object invoke(org.aopalliance.intercept.MethodInvocation invocation) throws Throwable
      Specified by:
      invoke in interface org.aopalliance.intercept.MethodInterceptor
      Throws:
      Throwable