ASP.NET Web API 动作缓存

Question

我正在尝试在 ApiControler 中缓存操作的结果，但由于某种原因，我没有看到缓存的内容。我不完全了解 MVC 缓存的工作原理，但我假设如果缓存了动作响应，那么它不应该一直被调用，但它应该只输出缓存（如果可用）。

行动：

    [HttpGet]
    public HttpResponseMessage NetworkStatusSummary()
    {
        // getting networkStatuses
        HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.OK, networkStatuses);

        response.Headers.CacheControl = new CacheControlHeaderValue {MaxAge = new TimeSpan(0, 10, 0), Public = true};

        return response;
    }

我在这里做错了什么？

Answer 1

好吧，似乎没有什么花哨的内置 Web API。于是想出了：

    private IList<NetworkStatus> NetworkStatuses
    {
        get
        {
            IList<NetworkStatus> networkStatuses;
            Cache cache = HttpContext.Current.Cache;

            if (cache[NETWORK_STATUSES_CACHE_KEY] == null)
            {
                networkStatuses = m_networkOwnerService.GetNetworkStatuses();
                cache.Add(NETWORK_STATUSES_CACHE_KEY, networkStatuses, null, Cache.NoAbsoluteExpiration, new TimeSpan(0, 5, 0), CacheItemPriority.Default, null);
            }
            else
            {
                networkStatuses = (IList<NetworkStatus>) cache[NETWORK_STATUSES_CACHE_KEY];
            }

            return networkStatuses;
        }
    }