what is 503 service

From: http://blog.csdn.net/zll01/article/details/5018413In 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 effect, in fact, the site's

returns a The HTTP status code is the server state that is displayed on your site when responding to a request, for example: When the user accesses the Web page in the browser. When the search engine Spiders crawl the page.

The following provides a complete list of HTTP status codes.1XX (temporary response) A status code that represents a temporary response and requires the requestor to perform an action before continuing.100 (continued) The requesting person shall

1xx (temporary response)A status code that represents a temporary response and requires the requestor to perform an action before continuing. Code Description 100 (Continue) The requestor shall continue to

Invalid HTTP 400– requestHTTP 401.1– not authorized: Logon failedHTTP 401.2– not authorized: Login failed due to server configuration problemHTTP 401.3–acl prohibit access to resourcesHTTP 401.4– not authorized: Authorization denied by filterHTTP 401

Java Web knowledge point Summary 1. Java Web knowledge point summary Common status codes and their meanings Some common HTTP status codes are: 200 -- the server returns the webpage successfully 400 -- the server does not understand the request

1xx - 信息提示这些状态代码表示临时的响应。客户端在收到常规响应之前，应准备接收一个或多个 1xx 响应。   ·0 - 本地响应成功。　· 100 - Continue 初始的请求已经接受，客户应当继续发送请求的其余部分。（HTTP 1.1新）　· 101 - Switching Protocols 服务器将遵从客户的请求转换到另外一种协议（HTTP 1.1新）2xx - 成功这类状态代码表明服务器成功地接受了客户端请求。　· 200 - OK

http/1.1 defines the status code value and the corresponding reason phrase (reason-phrase) example.1XX means: MessageThis type of status code, on behalf of which the request has been accepted, needs to be processed. This type of response is a

Common status codes and their meaningsSome common HTTP status codes are:200-The server successfully returned to the Web page400-The server does not understand the syntax of the request404--The requested page does not exist503--Service not

The status codes in HTTP 1.1 are divided into five main categories:100-199 is used to specify certain actions that the client should be corresponding.200-299 is used to indicate a successful request.300-399 is used for files that have been moved and

HTTP Status CodesThe HTTP Status codes allow a server to communicate the results of processing a client ' s request. TheseStatus codes is grouped into the following categories:Informational Codes-status Codes indicating that the server has received

In 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 effect, in fact, the site's regular HTTP status code performance is the same, Google

OverviewHTTP Hypertext Transfer Protocol (hypertext Transfer Protocol, referred to as HTTP) is the application layer protocol, since 1990, HTTP has been applied to the WWW Global information Service system. It is a stateless protocol, that is, the

The status codes in HTTP 1.1 are divided into five main categories:100-199 is used to specify certain actions that the client should be corresponding.200-299 is used to indicate a successful request.300-399 is used for files that have been moved and

Status Messages 1XX: Information message Description Continue The server only receives partial requests, but once the server does not reject the request, the client should continue to send the

If a request is sent to your server asking to display a webpage on your site (for example, when a user accesses your page through a browser or Googlebot crawls a webpage), the server returns an HTTP status code in response to the request.This status

The HTTP status Code (response code) is used to indicate whether the HTTP request has completed successfully. The HTTP response type is divided into five categories: message response, successful response, redirect, client error, server-side

You should know the status code when learning Web design, but our common status code is 200,404, the following describes the other status values1 HTTP status code starting withA status code that represents a temporary response and requires the

Summary The HTTP status code is a 3-bit numeric code that represents the HTTP response status of the Web server. It is defined by the RFC 2616 specification and is extended by RFC 2518, RFC 2817, RFC 2295, RFC 2774, RFC 4918, and other

The complete HTTP 1.1 specification is from RFC 2616 and can be accessed online at Http://www.talentdigger.cn/home/link.php?url=d3d3LnJmYy1lZGl0b3Iub3JnLw%3D%3D. The status code for HTTP 1.1 is marked as a new feature because many browsers only