27 June 2026
This week in caching: nginx fastcgi_cache, the cheap full-page layer For folks who'd rather not run Varnish: — fastcgi_cache_key and the bypass cookie — the canonical config to skip cache for logged-i…
26 June 2026
This week in caching: the Vary header, the quiet hit-rate killer Small header, outsized damage. Curated: — Vary: Accept-Encoding done right — the one Vary value you almost always want, and why normali…
25 June 2026
This week in caching: warming the cache before users do Cold caches after a deploy or purge cost you the worst TTFB of the day: — Sitemap-driven crawl warming — replaying your sitemap.xml through the …
24 June 2026
This week in caching: Memcached vs Redis, past the meme The comparison everyone has an opinion on, done carefully: — When Memcached actually wins — multithreaded, slab allocation, lower memory overhea…
23 June 2026
This week in caching: chasing hit ratio Your CDN bill and TTFB both track this number. Reads: — Reading the CDN cache-status header — decoding HIT/MISS/EXPIRED/STALE and the newer standardized Cache-S…
22 June 2026
This week in caching: full-page cache landmines FPC is the biggest speed win and the biggest footgun. Field notes: — Caching the logged-in state by accident — the classic where user A sees user B's ca…