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Cache-Control

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2026-11-06

HTTPS and the Web Server in Practice: Part 4 — HTTP and CDN Caching: Cache-Control, ETag, proxy_cache, and Cache Invalidation

#caching #cdn #http #nginx #cache-control

Caching is the cheapest way to speed up a site and reduce server load: a response that doesn’t need to be regenerated and retransmitted arrives instantly. But caching has a downside — users see old styles after a …