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First, the entity headerThe HTTP entity header describes the contents of the HTTP entry. The following 10 basic font header fields are defined in version http/1.1. Content-type: Types of objects that are hosted in an entity

in front of network programming (1) We learned that if you want to access the resources of other hosts, then you need to know the URL of the resource. So if we know the URL, how do we go toaccess the resources on its host? This articlemainly about

One: HTTP protocol cache controlThe 1th time the request is OK304 not Modified unmodified state on 2nd requestExplanation: There are some cache servers on the network, and the browser itself has caching capabilities.When we first time a picture,

Reading "http authoritative guide"Chapter 1th HTTP Overview1.1 http--Multimedia Messenger of the Internet1.2 Web client and server1.3 Resources1.3.1 Media TypeA MIME type is a text tag that represents a primary object type and a specific subtype,

Reprint website: http://www.cnblogs.com/gbyukg/p/3326825.htmlDownload a single file and print the output to standard output (STDOUT) by defaultCurl http://www.centos.org Save the downloaded file to the specified file with the-o/-o option: -o: Save

The Phpheader () function syntax and usage code are described in detail. Common status codes of headers are listed here. The Php header () function syntax and usage code are described in detail. Common status codes of headers are listed here.

Rss2.0 standard RSS is an XML dialect. Therefore, RSS standards must comply with XML standards. In the RSS document, its root element is rss, it also contains a version attribute indicating its version. For example, rssversion2.0 is composed of a

Remember an expert said that success lies in the details. Similarly, the quality of a piece of code also lies in the handling of the details. The more you consider, the less likely the problem will be.The cache was written before, but after looking

Windows forfiles (delete historical files) and Windows forfilesIntroduction Forfiles is a batch DELETE command that comes with windows. It is a good option to determine the time by modifying the date attribute of the file itself and use it to delete

1. function: supports resumable download, compute the transfer rate, and control the transfer rate. easy to use: The code is as follows: $ Object = new httpdownload ();$ Object-> set_byfile ($ file) % N # H # %; // server file name, including Path$

The HTTP protocol includes a protocol named caching. So many friends are not very clear about the use of this Protocol. Now we will introduce some applications of this Protocol. The caching protocol in HTTP is used up, which can greatly reduce

IntroductionForfiles is a batch delete command that comes with Windows, it is a good choice to judge the history file by using it to judge the time by the modification Date property of the file itself.Grammarforfiles [/P Path] [/M searchmask] [/s] [/

[Window Object]It is a top-level object, not another object's property, that is, the browser's window.PropertyDefaultstatus The default status bar messageDocument currently displayed (the property itself is an object)A frame in the frame window

download a single file and print the output to the standard output (STDOUT) in Curl HTTP by default://www.centos.orgSave the downloaded file to the specified file via the-o/-o option:-o: Save the file as the file name specified on the command line-O:

Original address: http://www.thegeekstuff.com/2012/04/curl-examples/Download a single file and print the output to standard output (STDOUT) by defaultCurl http://www.centos.orgSave the downloaded file to the specified file with the-o/-o option:-O:

Web application Performance optimization Golden rule: Optimize the performance of the Front End program (front-end) first, as this is the cost of 80% or more of the end-user response time. Rule 1. Reduce the number of HTTP requests80% of End-user

Access Delete Path 1.1 SaveIs in Storeimage this method:Save pictures to memory and hard disk-(void) Storeimage: (UIImage *) Image recalculatefromimage: (BOOL) Recalculate ImageData: (NSData *) ImageData Forkey: (NSString *) Key Todisk: (BOOL)

Sometimes it is necessary to return additional information in response to a HTTP request. Such information May is built and returned using Response and response.responsebuilder. For example, a common RESTful pattern for the creation of a new

Command basic format:Hadoop Fs/dfs-cmd 1.lsHadoop Fs-ls/Lists directories and files under the root directory of the HDFs file systemHadoop fs-ls-r/List all directories and files of the HDFs file system 2.putHadoop fs-put The parent

1. Reduce the number of HTTP requestsmerge pictures, CSS, JS to improve the first access user wait time.  2. Using CDNnear Cache ==> Intelligent routing ==> load balancing ==>WSA Full station dynamic acceleration 3. Avoid empty src and hrefwhen the