Friday, February 10, 2012
Applications
Error 404--Not Found |
From RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1:10.4.5 404 Not FoundThe server has not found anything matching the Request-URI. No indication is given of whether the condition is temporary or permanent. If the server does not wish to make this information available to the client, the status code 403 (Forbidden) can be used instead. The 410 (Gone) status code SHOULD be used if the server knows, through some internally configurable mechanism, that an old resource is permanently unavailable and has no forwarding address. |
Ajax appeal
Ajax is one of those IT ideas on the popularity fast track. Its roots trace back to 1998, but interest in the programming technology has skyrocketed over the last year.
One reason is Google's use of Ajax in its widely known Gmail and Google Maps applications, which brought nearly instant credibility to the technology.
"In just a few short months, Ajax seems to have become the most prominent topic of discussion (and adoption) among Web developers," writes Ray Valdes, a research director at Gartner, in a recent report.
Proponents of Ajax -- which is short for Asynchronous JavaScript and XML -- herald the development tools for their simplicity, compatibility with existing application resources, and ability to spice up HTML user interfaces.
Alexei White, a product manager for eBusiness Applications Ltd., gives his take on Ajax and its ability to accelerate Web applications in this week's issue of Network World. Let us know what you think.
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