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4 results for “cache”.

• Service Worker Caching: The Night Cache-First Served the Wrong Page
  A service worker that cached every navigation served users stale — and sometimes wrong — HTML for hours; network-first for navigations fixed it without giving up speed.
• HTTP Status Codes and When to Use Each One
  Status codes are a contract with clients, caches, and crawlers — picking the right one decides whether your API is usable and your SEO is clean.
• How DNS Works: The Invisible Phone Book That Runs the Internet
  Every click starts with a lookup you never see: a name becomes a number in tens of milliseconds, through a global, cached, hierarchical database nobody centrally controls. Here is the machinery of DNS — roots, TLDs, resolvers, records and TTLs — and its documented weak spots.
• CDN Caching in Plain Terms: TTL, Stale, and When to Purge
  A CDN is not a copy of your site — it's a set of expiry rules about how long each edge may serve an old one. Understanding TTL, stale-while-revalidate, and cache keys is 90% of correct caching.