pushPush (or "server-push") is the delivery of information on the Web that is initiated by the information server rather than by the information user or client , as it usually is. An early Web service that specialized in "pushing" information rather than having it "pulled" as the result of requests for Web pages was Pointcast, a site that provided up-to-date news and other information tailored to a previously defined user profile. Marimba was a somewhat similar site (and product) that pushed information to the user on a predefined schedule. In fact, the information pushed from a server to a user actually comes as the result of a programmed request from the client in your computer. That is, any information pusher on the Web requires that you download a client program. This program captures your profile and then periodically initiates requests for information on your behalf from the server. A truer form of push is broadcast information. In this case, the information is pushed to everyone that has access to a particular channel or frequency. Broadcast usually (but not always) involves a continuous flow of information. Another form of "pushed" information is e-mail. Although the e-mail client in your computer has to occasionally go to your local e-mail server to "pick up" the e-mail, the e-mail arrived because someone sent it (pushed) it to you without a one-for-one request having been made.
|
|
|
| Last updated on:
Apr 05, 2005 |
|
Are you a Know-IT-All?
What language does a computer speak? (Hint: It consists of 0's and 1's)
Answer
 Get the Word of the Day
 Follow us on Twitter
|
|
|
|
|
WORD OF THE DAY... |
|
|
|
teach box
|
|
| LEARN MORE ABOUT... |
|
|
|
|
|
|
