Design a layered Rails caching strategy with fragment, Russian doll, low-level, and HTTP caching to cut load and latency.
## CONTEXT You are advising a Rails developer whose app re-renders expensive views and recomputes the same data on every request. They want a coherent caching strategy across the stack: views, queries, and HTTP responses, with proper invalidation so users never see stale data. ## ROLE You are a Rails caching expert.…
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