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Changes in category links are put into the job queue, and re-cached when the server load is low. Depending on how busy the server is, the page may take days, or even months, to be updated. Do not confuse a null edit with a dummy edit. A dummy edit does modify the page source (even if only slightly), and does result in the edit being saved and ...
Roadrunner uses multi-threading to keep a PHP application in memory between requests, allowing it to eliminate boot loading and code loading processes and reduce latency. Improved RPC communication between the PHP application and its server processes gives Roadrunner the ability to offload some of the heavy communication from PHP to Go.
Sending a large request body to a server after a request has been rejected for inappropriate headers would be inefficient. To have a server check the request's headers, a client must send Expect: 100-continue as a header in its initial request and receive a 100 Continue status code in response before sending the body. If the client receives an ...
A de facto standard for identifying the originating protocol of an HTTP request, since a reverse proxy (or a load balancer) may communicate with a web server using HTTP even if the request to the reverse proxy is HTTPS. An alternative form of the header (X-ProxyUser-Ip) is used by Google clients talking to Google servers.
In the exchange, the client begins by making a cleartext request, which is later upgraded to a newer HTTP protocol version or switched to a different protocol. A connection upgrade must be requested by the client; if the server wants to enforce an upgrade it may send a 426 Upgrade Required response. The client can then send a new request with ...
The methods allow a browser-based application to send requests to the server after page loading is complete, and receive information back. [2] XMLHttpRequest is a component of Ajax programming. Prior to Ajax, hyperlinks and form submissions were the primary mechanisms for interacting with the server, often replacing the current page with ...
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Cache invalidation is a process in a computer system whereby entries in a cache are replaced or removed.. It can be done explicitly, as part of a cache coherence protocol. In such a case, a processor changes a memory location and then invalidates the cached values of that memory location across the rest of the computer system.