当流量瞬时激增时，API会出现大量 HttpCode 为 503 的错误。与此同时，发现另一个错误 `responses.go:69 write response failed, error: context canceled` 与该错误具有很强的相关性。这 2 个错误都由我们使用的 go-zero 框架内部抛出。后来我花费了16个小时来搞清楚这个事情，在这里分享给大家。/01 结论先行...
Status Code 503 The 503 (Service Unavailable) status code also happens on the server-side (it’s in the 500 blocks, right?) This is similar to a 500 error and it usually means the server is unavailable—however, sometimes the code means it’s anexpectederror. While a 500 status code s...
Status code 503, “service unavailable” error is a server-side HTTP error. It usually means the server is temporarily unavailable. It’s not ready to handle the request, and won’t be able to process it. If a web server is down for maintenance or overloaded, it will often return with ...
This means that the server has received the request headers, and that the client should proceed to send the request body (in the case of a request for which a body needs to be sent; for example, aPOSTrequest). If the request body is large, sending it to a server when a request has...
503:由于临时的服务器维护或者过载,服务器当前无法处理请求。这个状况是临时的,并且将在一段时间以后恢复。如果能够预计延迟时间,那么响应中可以包含一个 Retry-After 头用以标明这个延迟时间。如果没有给出这个 Retry-After 信息,那么客户端应当以处理500响应的方式处理它。
305 “Use Proxy”– The requested resource is available only through a proxy. This code is now deprecated and browsers disregard it. 306 “Switch Proxy”– This code is no longer in use. It means that the following requests should use the specified proxy. ...
This means that the resource is now permanently located at another URI, specified by the Location: HTTP Response header. This has the same semantics as the 301 Moved Permanently HTTP response code, with the exception that the user agent must not change the HTTP method used: if a POST was ...
Typically, this HTTP status code means that the request contains invalid characters or sequences, or that the request goes against the security settings in the Http.sys file.IIS defines the following HTTP status codes that indicate a more specific cause of an error 400:...
A 302 means that the target destination has been found, but it lives in a different location. However, it is a rather ambiguous status code because it doesn’t tell if this is a temporary situation. Use a 302 redirect only if you want to temporarily redirect a URL to a different source...
The Hypertext Transfer Protocol Stack (Http.sys) file blocks IIS from processing the request because of a problem in the request. Typically, this HTTP status code means that the request contains invalid characters or sequences, or that the request goes against the security settings in t...