@CachePut后，@Cacheable对象在缓存中丢失

问：

    @GetMapping("/{id}")
    @Cacheable(value = "guests", key = "#id")
    @RolesAllowed({"MANAGER", "ADMIN"})
    public ResponseEntity<GuestResponse> findById(@PathVariable("id") Long id) {
        return ResponseEntity.ok(guestService.findById(id));
    }

    @CachePut(value = "guests", key = "#id")
    @PutMapping("/{id}")
    @RolesAllowed({"MANAGER", "ADMIN"})
    public ResponseEntity<HttpStatus> update(@RequestBody Map<Object, Object> fields, @PathVariable("id") Long id) {
        guestService.update(id, fields);
        return ResponseEntity.ok(HttpStatus.OK);
    }

对象通常按 id 缓存，但@CachePut后，尽管数据库中发生了更改，但无法再从缓存中找到该对象。作为回应，我得到了 200 个没有尸体。