نماذج الفشل

في هذا الدرس

name the three models at a conceptual level.

الموضوعات المخطط لها

• Crash: a node stops and stays stopped (the simplest model).
• Omission: a node or link drops some messages or fails to send or respond.
• Byzantine: a node behaves arbitrarily or maliciously, sending wrong data.
• Most business systems assume crash and omission failures, and rely on security controls against byzantine behaviour.
• Byzantine tolerance matters for blockchains and some safety-critical systems.