graceful degradation

graceful degradation

[′grās·fu̇l ‚deg·rə′dā·shən]
(computer science)
A programming technique to prevent catastrophic system failure by allowing the machine to operate, though in a degraded mode, despite failure or malfunction of several integral units or subsystems.

graceful degradation

A system that continues to run at some reduced level of performance after one of its components fails. It is a level below fault-tolerant systems, which continue running at the same rate of speed. For example, a two-computer complex employing graceful degradation would be reduced to using one system if the other fails. With fault tolerance, a third computer would be standing by to take over in the event of failure. See fault tolerant and graceful exit.
References in periodicals archive ?
Benefits include a significant increase in mean time between critical failure (MTBCF), substantial decreases in operational and sustainment costs, and graceful degradation in the event of hardware failure, as opposed to single point of failure or instantaneous shutdown.
A built-in monitoring and protection system features graceful degradation at temperatures >40[degrees]C and power reduction to a safe level if VSWR exceeds 2:1.
This modular approach reduces the total cost of ownership by enabling the use of COTS components and MMIC technology, by simplifying installation and integration, by allowing graceful degradation with no single point of failure (PoF), and by permitting in-field TRM replacement (LRU) without having to take the entire system off-line.
More graceful degradation of performance when blockage occurs
This material is the result of extensive development by the company and is specifically designed for graceful degradation, to ensure that cabinets and shelters maintain their mechanical integrity and thermal insulation properties for as long as possible in a fire.
Indeed if one system is not used its energy can be used by others and if damaged the power will not be cut but will follow a graceful degradation path, while a diode indicator indicates remaining power.
The availability of inspected systems subject to shocks and graceful degradation, IEEE transactions on Reliability, Vol 51 (3): 371-374 .
Topics covered include site organization, navigation tools, accessible HTML, image maps, use of color, style sheets, multimedia, JavaScript, graceful degradation, PDF access issues, and site evaluation.
The distinction being made is that progressive download typically offers more graceful degradation.
Graceful degradation is most effective when it does not require special script or styling to work.
COM programmers are responsible for entering and leaving the COM environment, instantiating and reference counting COM objects, querying objects for version information, coding to take advantage of advanced object versions, and coding graceful degradation of function when newer versions aren't available.