BAEL-6300: Invoking Spring Cache @Cacheable from Another Method of the Same Bean (#14689)

* BAEL-6300: Problem Reproduction

* BAEL-6300: Internal Invocation with External Reference

* BAEL-6300: compile-time weaving

* BAEL-6300: load-time weaving

spring-aop-2/src/main/java/com/baeldung/selfinvocation/MathService.java

@@ -0,0 +1,43 @@
+package com.baeldung.selfinvocation;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.cache.annotation.CacheConfig;
+import org.springframework.cache.annotation.CacheEvict;
+import org.springframework.cache.annotation.Cacheable;
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.stereotype.Service;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+@Service
+@CacheConfig(cacheNames = "square")
+@Scope(proxyMode = ScopedProxyMode.TARGET_CLASS)
+public class MathService {
+
+    @Autowired
+    private MathService self;
+    private final AtomicInteger counter = new AtomicInteger();
+
+    @CacheEvict(allEntries = true)
+    public AtomicInteger resetCounter() {
+        counter.set(0);
+        return counter;
+    }
+
+    @Cacheable(key = "#n")
+    public double square(double n) {
+        counter.incrementAndGet();
+        return n * n;
+    }
+
+    public double sumOfSquareOf2() {
+        return this.square(2) + this.square(2);
+    }
+
+    public double sumOfSquareOf3() {
+        return self.square(3) + self.square(3);
+    }
+
+}
+