html last modified header

There are many kinds of caches: Server cache, third-party cache, browser cache, and so on. The browser cache is the least expensive, because the browser cache relies on the client and consumes little server-side resources.Making the browser cache

1) What is "last-modified"?When the browser requests a URL for the first time, the server-side return status is 200, the content is the resource you requested, and there is a last-modified attribute that marks the last time the file was modified at

This article is based on RFC2616 (http/1.1 specification), referencehttp://www.w3.org/Protocols/rfc2068/rfc2068http://www.w3.org/Protocols/rfc2616/rfc2616Http://www.ietf.org/rfc/rfc3229.txtTypically HTTP messages include client-to-server request

This article is based on RFC2616 (http/1.1 specification), referencehttp://www.w3.org/Protocols/rfc2068/rfc2068http://www.w3.org/Protocols/rfc2616/rfc2616Http://www.ietf.org/rfc/rfc3229.txtTypically HTTP messages include client-to-server request

This article is based on RFC2616 (http/1.1 specification), referencehttp://www.w3.org/Protocols/rfc2068/rfc2068http://www.w3.org/Protocols/rfc2616/rfc2616Http://www.ietf.org/rfc/rfc3229.txtTypically HTTP messages include client-to-server request

Turn from: http://www.cnblogs.com/yizhenfeng168/p/7078480.htmlIn this paper, according to RFC2616 (http/1.1 specification), reference http://www.w3.org/Protocols/rfc2068/rfc2068 http://www.w3.org/Protocols/rfc2616/rfc2616 Http://www.ietf.org/rfc/rfc3

In this paper, according to RFC2616 (http/1.1 specification), reference http://www.w3.org/Protocols/rfc2068/rfc2068 http://www.w3.org/Protocols/rfc2616/rfc2616 Http://www.ietf.org/rfc/rfc3229.txt Typically, HTTP messages include the client's request

The HTTP header field includes class 4:     general-header; Generic headers      request-header; Request Header      Response-header; Response Header      Entity-header. Entity Header  *****************************************************************

The HTTP header field includes class 4:     general-header;     request-header;      Response-header;     Entity-header.  ********************************************  general Header fields=============================   General Headers are

HTTP (hypertexttransferprotocol) is the abbreviation of Hypertext Transfer Protocol, it is used to transmit data of WWW mode, please refer to RFC2616 for details of HTTP protocol. The HTTP protocol uses a request/response model. The client sends a