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In modern game CI, an ARTEFACT CACHE (Bazel / SCons / Unreal DDC) accelerates rebuilds by which mechanism?
AStore full snapshots of the working tree per commit
BAlways recompile everything for safety on every build
CSkip type checking on TypeScript files for speed
DHash inputs; reuse output if hash matches a cached entry
Answer & Solution
Correct answer: D. Hash inputs; reuse output if hash matches a cached entry
Unreal Derived Data Cache + Bazel + SCons docs: content-addressed cache. If inputs unchanged (hash equal), output is fetched, not rebuilt. Huge speedup in big projects.
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