what is 503 service

In the website log , we often see a lot of HTTP code returned, such as 201, 304, 404, and so on. However, these specific return HTTP code exactly what the meaning of it, do a bit of knowledge in this, remember it doesn't matter, then look at the

6.1HTTP message Header1. HTTP protocol request and Response messages must contain HTTP headerThe HTTP header must be included in the request and response messages of the Protocol, and the first content is the information provided by the client and

The role of the status code is to describe the return request result when the client sends a request to the server side. With the status code, the user can know whether the server has handled the request properly, or what error has occurred.RFC2616

Common HTTP status Codes OK 301 Moved Permanently 302 Found 304 Not Modified 307 Temporary Redirect Request 401 Unauthorized 403 Forbidden 404 Not Found 410 Gone Internal Server Error 501 Not implemented ContinueThe

Reprinted from: http://desert3.iteye.com/blog/1136548502 Bad Gateway:tomcat didn't start up.504 Gateway Time-out:nginx reported errors, usually nginx as a reverse proxy server, the connected application server such as Tomcat did not cause the

IIS schema and HTTP request processing flowIIS in the Windows operating system is responsible for providing internet services, and a computer running IIS can be viewed as a Web server.The IIS major version number in Windows XP SP2 is 5,windows 2003

Http status code (from cainiao tutorial ), HyperText Transfer Protocol (HyperText Transfer Protocol) is the most widely used network transmission Protocol on the Internet. All WWW files must comply with this standard. HTTP is a TCP/IP-based

1XX (Temporary response)A status code that represents a temporary response and requires the requestor to continue the operation.Code description100 (continued) The requesting person shall continue to make the request. The server returns this code to

ThinkPhp source code reading experience, thinkphp source code experience I may see more header functions in php, as long as they are used for jump. When reading the TP source code today, we found that the header function has a third parameter. If

When a user clicks or a search engine sends a browser request to the website server, the server returns the Http Header status code: 1. If Http/1.1 200 OK is accessed normally, the access is successful and the status of the website is normal. 2.

HTTP, HTTPS, and HTTPHTTPSI. HTTP protocol I recently read some books on network communication and studied HTTP and TCP/IP. With some new gains and understandings, I will summarize them here.(1) What is HTTP? HTTP (HyperText Transfer Protocol,

This digest is from the Internet, but forget the specific website, please forgive meIn the actual application of the site construction, prone to a lot of small mistakes, like MySQL was optimized not in place, the impact of the overall site browsing

Today, chatting with colleagues about the issue of HTTP status code, suddenly found that the work of all these years to deal with this day and the things do not have a detailed understanding. Everyday the most common status code is 500 and 404,

Some of the common status codes are:200-Server successfully returned to Web page404-The requested page does not exist503-Service Not availableDetailed decomposition:1XX (Temporary response)A status code that represents a temporary response and

HTTP Status CodeCommon Status Codes:Http:status 200– Server successfully returned to Web pageHttp:status 404– The requested page does not existHttp:status 503– Service Not availableDetailedDescription: Http:status 1xx (Temporary response)

HTTP is stateless, will not remember the "last Request * * *", so even the same page of JS, CSS, JPG also have to repeat the submission of accept-language, accept-encoding, cookies and so on. In general, only the browser requests the server side,

During the Curl Crawl, a http_code is returned, and the following is their meaning information $http_code["0"]="Unable to access"; $http _code[" -"]="Continue"; $http _code["101"]="Switching Protocols"; $http _code[" $"]="OK"; $http

HTTP State code (HTTP status codes)A 1xx (temporary response) represents a temporary response and requires a status code for the requester to continue the operation. - (continued) The requestor shall continue to make the request. The server

HTTP 100 ContinueGo on 101 Switching protocolsSwitching protocols 200 OkNormal 201 Createdhas been created 202 Acceptedhas accepted 203

Website log http return code parsingMost of the time, the traffic statistics tool does not help us to understand the website's operating status well. The emergence of website logs helps us solve this problem. Analyze the http return code of the