Private versus shared
A browser cache serves one user; a shared cache can serve many. Personal responses must not accidentally become shared.
FinFly Explains / IT
Website caching
A cache reuses saved responses, reducing origin-server work.
Why old content appears
Caching rules determine freshness. no-cache requires validation before reuse; no-store forbids storing the response.
FinFly practice
Test both normal reloads and a new session. Design publication-time invalidation, not just manual clearing.
Method
Primary sources
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