Clear expression caches on context shutdown

Issue: SPR-12691

Author: snicoll

spring-context/src/main/java/org/springframework/cache/interceptor/CacheAspectSupport.java

@@ -288,6 +288,7 @@ protected <T> T getBean(String beanName, Class<T> expectedType) {
 	 */
 	protected void clearMetadataCache() {
 		this.metadataCache.clear();
+		this.evaluator.clear();
 	}
 
 	protected Object execute(CacheOperationInvoker invoker, Object target, Method method, Object[] args) {

spring-context/src/main/java/org/springframework/cache/interceptor/ExpressionEvaluator.java

@@ -123,6 +123,16 @@ public boolean unless(String unlessExpression, AnnotatedElementKey methodKey, Ev
 		return getExpression(this.unlessCache, methodKey, unlessExpression).getValue(evalContext, boolean.class);
 	}
 
+	/**
+	 * Clear all caches.
+	 */
+	void clear() {
+		this.keyCache.clear();
+		this.conditionCache.clear();
+		this.unlessCache.clear();
+		this.targetMethodCache.clear();
+	}
+
 	private Method getTargetMethod(Class<?> targetClass, Method method) {
 		AnnotatedElementKey methodKey = new AnnotatedElementKey(method, targetClass);
 		Method targetMethod = this.targetMethodCache.get(methodKey);