@GetMapping("/cache")
    public ResultBean testCache() {
        ResultBean response = new ResultBean();
        response.setCode(200);
        response.setMsg(new Date().toString());
        return response;
    }
test pass for cache plugin.

@return response. result bean
shenyu-examples/shenyu-examples-http/src/main/java/org/apache/shenyu/examples/http/controller/HttpTestController.java