state
(n.) The last-known or current status of an application or a process. The terms maintaining state and/or managing state refer to keeping track of the condition of the process.
The Internet is intrinsically stateless because each request for a new Web page is processed without any knowledge of previous pages requested. This is one of the chief drawbacks to the HTTP protocol. Because maintaining state is extremely useful, programmers have developed a number of techniques to add state to the World Wide Web. These include server APIs, such as NSAPI and ISAPI, and the use of cookies.
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- stateful
(adj.) Having the capability to maintain state. Most common applications are inherently stateful.
- Stateful Inspection
Also referred to as dynamic packet filtering. Stateful inspection is a firewall architecture that works at the network layer. Unlike static packet filtering, which examines a packet based on the information in its header, stateful inspection tracks each connection traversing all interfaces of the firewall and makes sure they are valid. An example of a […]
- stateless
(adj.) Having no information about what occurred previously. Most modern applications maintain state, which means that they remember what you were doing last time you ran the application, and they remember all your configuration settings. This is extremely useful because it means you can mold the application to your working habits. The World Wide Web, […]
- statement
An instruction written in a high-level language. A statement directs the computer to perform a specified action. A single statement in a high-level language can represent several machine-language instructions. Programs consist of statements and expressions. An expression is a group of symbols that represent a value.
- static
(adj.) Generally refers to elements of the Internet or computer programming that are fixed and not capable of action or change. The opposite of static is dynamic. A Web site that is static can only supply information that is written into the HTML and this information will not change unless the change is written into […]