Why it matters

Fault injection shapes reliable testing. Understanding shapes practice.

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The architecture

Test-mode API triggers specific faults.

Deterministic + repeatable.

CI-integrated.

Fault injection stackTest APItrigger faultFault mid-executionin agent codeVerify handlingassertionsByteman / ByteBuddy / custom AOP + feature flags for triggering
Fault injection.
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How it works end to end

Feature flags per fault type.

ByteBuddy / Byteman for instrumentation.

Log injection events.