public void returns_all_keys_in_cache()
{
IApiOutputCache cache = new MemoryCacheDefault();
cache.Add("base", "abc", DateTime.Now.AddSeconds(60));
cache.Add("key1", "abc", DateTime.Now.AddSeconds(60), "base");
cache.Add("key2", "abc", DateTime.Now.AddSeconds(60), "base");
cache.Add("key3", "abc", DateTime.Now.AddSeconds(60), "base");
var result = cache.AllKeys;
CollectionAssert.AreEquivalent(new[] { "base", "key1", "key2", "key3" }, result);
}
public void returns_all_keys_in_cache()
{
IApiOutputCache cache = new MemoryCacheDefault();
cache.Add("base", "abc", DateTime.Now.AddSeconds(60));
cache.Add("key1", "abc", DateTime.Now.AddSeconds(60), "base");
cache.Add("key2", "abc", DateTime.Now.AddSeconds(60), "base");
cache.Add("key3", "abc", DateTime.Now.AddSeconds(60), "base");
var result = cache.AllKeys;
CollectionAssert.AreEquivalent(new[] { "base", "key1", "key2", "key3" }, result);
}
public void remove_startswith_cascades_to_all_dependencies()
{
IApiOutputCache cache = new MemoryCacheDefault();
cache.Add("base", "abc", DateTime.Now.AddSeconds(60));
cache.Add("key1","abc", DateTime.Now.AddSeconds(60), "base");
cache.Add("key2", "abc", DateTime.Now.AddSeconds(60), "base");
cache.Add("key3", "abc", DateTime.Now.AddSeconds(60), "base");
Assert.IsNotNull(cache.Get("key1"));
Assert.IsNotNull(cache.Get("key2"));
Assert.IsNotNull(cache.Get("key3"));
cache.RemoveStartsWith("base");
Assert.IsNull(cache.Get("base"));
Assert.IsNull(cache.Get("key1"));
Assert.IsNull(cache.Get("key2"));
Assert.IsNull(cache.Get("key3"));
}
public void remove_startswith_cascades_to_all_dependencies()
{
IApiOutputCache cache = new MemoryCacheDefault();
cache.Add("base", "abc", DateTime.Now.AddSeconds(60));
cache.Add("key1", "abc", DateTime.Now.AddSeconds(60), "base");
cache.Add("key2", "abc", DateTime.Now.AddSeconds(60), "base");
cache.Add("key3", "abc", DateTime.Now.AddSeconds(60), "base");
Assert.IsNotNull(cache.Get("key1"));
Assert.IsNotNull(cache.Get("key2"));
Assert.IsNotNull(cache.Get("key3"));
cache.RemoveStartsWith("base");
Assert.IsNull(cache.Get("base"));
Assert.IsNull(cache.Get("key1"));
Assert.IsNull(cache.Get("key2"));
Assert.IsNull(cache.Get("key3"));
}
/// <summary>
/// 将输出保存在缓存中。
/// </summary>
/// <param name="actionExecutedContext"></param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public override async System.Threading.Tasks.Task OnActionExecutedAsync(HttpActionExecutedContext actionExecutedContext, System.Threading.CancellationToken cancellationToken)
{
// 响应对象已经生成，可以直接调用 actionExecutedContext.Response
// 设置协商缓存：etag
EntityTagHeaderValue etag = new EntityTagHeaderValue("\"" + Guid.NewGuid().ToString() + "\""); // 根据http协议， ETag的值必须用引号包含起来
actionExecutedContext.Response.Headers.ETag = etag;
// 设置user agent的本地缓存
actionExecutedContext.Response.Headers.CacheControl = GetDefaultCacheControl();
// actionExecutedContext.Response.Headers.Remove("Content-Length"); // 改变了值，它会发生变化。删除它的话，后续的程序会自动地再计算
// 保存到缓存
string cacheKey = getCacheKey(actionExecutedContext.ActionContext);
var contentBytes = await actionExecutedContext.Response.Content.ReadAsByteArrayAsync();
_cache.Add(cacheKey + ":etag", etag.Tag, DateTimeOffset.Now.AddSeconds(this.ServerCacheExpiration));
_cache.Add(cacheKey, contentBytes, DateTimeOffset.Now.AddSeconds(this.ServerCacheExpiration));
}
