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我正在使用带有 Gmail 的 pubsub 来推送通知。

pubsub 订阅按预期接收消息。

但是，当我拉出消息时，我注意到如果没有消息可以拉出，则获得响应的延迟非常慢。

如果至少有 1 条消息要拉，那么响应是及时的

有没有其他人经历过这个？

我能想出的唯一解决办法是在队列上留言。

if (credential.RequestAccessTokenAsync(CancellationToken.None).Result)
{
    var pubsubSerivce = new Google.Apis.Pubsub.v1beta2.PubsubService(
    new BaseClientService.Initializer()
    {
        HttpClientInitializer = credential,
        ApplicationName = "iLink",
    });

    PullRequest pr = new PullRequest();
    pr.MaxMessages = 100;
    PullResponse prs = pubsubSerivce.Projects.Subscriptions.Pull(pr, "projects/vivid-canyon-90023/subscriptions/iLink").Execute();

    AcknowledgeRequest ak = new AcknowledgeRequest();

    if (prs != null && prs.ReceivedMessages != null)
    {                    
        ak.AckIds = new List<string>();
        string messageText = "";
        foreach (ReceivedMessage rm in prs.ReceivedMessages)
        {
            ak.AckIds.Add(rm.AckId);
            messageText += " | " + rm.Message.Data;
        }
        pubsubSerivce.Projects.Subscriptions.Acknowledge(ak, "projects/vivid-canyon-90023/subscriptions/iLink").Execute();
        Master.setSuccessPrompt("Pulled Total Meesage count of: " + prs.ReceivedMessages.Count + " | Data | " + messageText);
    }
    else
    {
        Master.setSuccessPrompt("No Messages to pull");
    }
}
4

1 回答 1

2

这并不慢，只是挂起并等待任何消息。尝试使用 returnImmediately=true。

于 2015-06-01T03:50:00.803 回答