课程: Programming Foundations: Web Security

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Resilience

Resilience

课程: Programming Foundations: Web Security

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Resilience

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- Skydivers don't just take one parachute with them. They take a second backup parachute in case the first one fails. It's common sense. It would be too risky to depend on even the best designed parachute, so redundant measures are put in place. It's a good illustration of the importance of resilience. Resilience systems can deliver intended outcomes, despite adverse events. Webster's Dictionary defines resilience as an ability to recover from or adjust easily to misfortune or change. Resilience is related to defense in depth, but it's not the same. Defense-in-depth measures protect against threats. Resilience measures detect failures and allow a quick recovery. In other words, defense in depth keeps the first parachute strong and operational, but if it fails, resilience is the backup parachute that gets the skydiver back on the ground safely anyways. It is Plan B. We need both defense in depth and resilience. For…

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