.net core 3.1 使用StackExchange.Redis 高并发下timeout超时问题如何解决？
0
悬赏园豆：50
[已解决问题]
解决于 2022-06-20 08:47
StackExchange.Redis 在压测下频繁超时，按照网上的解决方案设置.ThreadPool.SetMinThreads也不起作用，请教大佬们有何解决方案；
Timeout awaiting response (outbound=0KiB, inbound=0KiB, 5981ms elapsed, timeout is 5000ms), command=HMGET, next: HMGET xxxxxxxxx:access:ccbbe50309060380bd37f96551b75ae6,
inst: 0, qu: 0, qs: 7, aw: False, rs: ReadAsync, ws: Idle, in: 4036, in-pipe: 0, out-pipe: 0, serverEndpoint: 112.12.15.12:6379,
mc: 1/1/0,
mgr: 10 of 10 available,
clientName: localhost,
IOCP: (Busy=0,Free=1000,Min=8,Max=1000),
WORKER: (Busy=58,Free=32709,Min=8,Max=32767),
v: 2.1.58.34321 (Please take a look at this article for some common client-side issues that can cause timeouts: https://stackexchange.github.io/StackExchange.Redis/Timeouts)
StackExchange.Redis.RedisTimeoutException: Timeout awaiting response (outbound=0KiB, inbound=0KiB, 5981ms elapsed, timeout is 5000ms), command=HMGET, next: HMGET StarPraise.User.Service.UserAccount.Tokens.TokenProvider:TokenData:access:ccbbe50309060380bd37f96551b75ae6, inst: 0, qu: 0, qs: 7, aw: False, rs: ReadAsync, ws: Idle, in: 4036, in-pipe: 0, out-pipe: 0, serverEndpoint: 172.22.25.32:6379, mc: 1/1/0, mgr: 10 of 10 available, clientName: localhost, IOCP: (Busy=0,Free=1000,Min=8,Max=1000), WORKER: (Busy=58,Free=32709,Min=8,Max=32767), v: 2.1.58.34321 (Please take a look at this article for some common client-side issues that can cause timeouts: https://stackexchange.github.io/StackExchange.Redis/Timeouts)
最佳答案
0
需要设置一下 系统线程池的 最小线程池
public static void Main(string[] args)
{
#if !DEBUG
//为了解决redis 超时的问题，设置最小线程数量
//https://gist.github.com/JonCole/e65411214030f0d823cb
ThreadPool.SetMinThreads(250, 250);
#endif
CreateHostBuilder(args).Build().Run();
}
收获园豆：50
这个值怎么设置合理，怎么计算呢
@狼性法则: 这个看你系统并发情况和服务器资源估算一下，通常设个100就好了，async await 异步编程稍微再加点。
@gt1987: 还有个问题 不知道大佬遇见过没有，httpclientfactory 在高并发的时候经常超时或者任务取消，怎么解决的？不压测1000请求平均几十毫秒，压测1000线程组，200用户组以后就到150ms了
@狼性法则:
1 httpclientfactory 怎么用的？
2 压测什么问题？压测接口，接口里面 使用了 httpclientfactory ？
@gt1987: 直接startup 注入services.AddHttpClient();,
直接在构造方法中拿的
private readonly IHttpClientFactory _clientFactory;
public BasicUsageModel(IHttpClientFactory clientFactory)
{
_clientFactory = clientFactory;
}
官方代码
var request = new HttpRequestMessage(HttpMethod.Get,"http://www.baidu.com");
var client = _clientFactory.CreateClient();
var response = await client.SendAsync(request);
@狼性法则: 这种写法没问题的。
压测问题就不太好说了，200个用户组压个30秒 不至于超时
