7 articles tagged with Cdn.
A plain-English guide to content delivery networks, the edge servers behind them, and how caching cuts latency for users everywhere.
The edge is fast because it's constrained. This is the decision map for what belongs at the edge, what belongs at origin, and how compute, data, caching, and auth fit together.
A request leaving a laptop somehow lands on a server 20ms away. Here is what actually decides which point of presence answers.
Buffered SSR makes users wait for the slowest query before they see anything. Streaming flips that: send the shell now, fill the gaps as data lands.
Moving header-injection logic from Lambda@Edge to Workers removes container cold starts. Here's when that swap pays off and when it doesn't.
The cache-control header most teams under-use. How stale-while-revalidate and stale-if-error turn a CDN from a freshness liability into a latency and resilience win, with the gotchas.
"There are two hard problems in computer science." We've worked on the cache-invalidation one for a while. The patterns that hold up at scale and the ones that look clean and aren't.
