A cookie is used to store small piece of information on client machine.A cookie contains page-specific information that a web server sends to a client along with page output.Cookies are used for sending page specific information because HTTP is a stateless protocol and cannot indicate whether page request coming from the same or different client.You can use cookies to keep track of individual user who access a web page across HTTP connection.
Cookies are saved on the client computer.
Cookies are of two types
1. Temporary
2. Persistent
Temporary cookies also know as session cookies,exist in the memory space of browser.When the browser is closed,all the session cookies added to the browser are lost.
A persistent cookie is saved as a text file in the file system of the client computer.
Cookies enable you to store information about a client,session,or application.When a browser request a page,it sends the information in the cookie along with the request information.A web server reads the cookie and extracts its value.
Friday, September 25, 2009
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