Spring Boot Cache – Custom KeyGenerator

I created this kind of a bean to have trully unique keys for caching trough annotations @Cachable, @CachePut etc.

    public KeyGenerator keyGenerator() {
        return new KeyGenerator() {
            public Object generate(Object o, Method method, Object... objects) {
                // This will generate a unique key of the class name, the method name,
                // and all method parameters appended.
                StringBuilder sb = new StringBuilder();
                for (Object obj : objects) {
                return sb.toString();

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