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Cdn Tutorials & Guides

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.
••last month

What Is a CDN and How Does It Work?

A plain-English guide to content delivery networks, the edge servers behind them, and how caching cuts latency for users everywhere.

KU
Kiril Urbonas·16
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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.
••2 months ago

The Edge Computing Playbook — What to Run at the Edge (and What Not To)

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.

KU
Kiril Urbonas·28
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A request leaving a laptop somehow lands on a server 20ms away. Here is what actually decides which point of presence answers.
••2 months ago

Anycast and Geo-Routing — How Requests Reach the Nearest PoP

A request leaving a laptop somehow lands on a server 20ms away. Here is what actually decides which point of presence answers.

KU
Kiril Urbonas·25
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Buffered SSR makes users wait for the slowest query before they see anything. Streaming from the edge flips that — send the shell now, fill the gaps as data lands.
••2 months ago

Streaming SSR at the Edge — RSC and HTML Streaming

Buffered SSR makes users wait for the slowest query before they see anything. Streaming from the edge flips that — send the shell now, fill the gaps as data lands.

KU
Kiril Urbonas·23
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We moved a rewrite-heavy request path off Lambda@Edge to Workers and cut p95 from 340ms to 41ms. Here's when that swap pays off and when it doesn't.
••2 months ago

Cloudflare Workers vs AWS Lambda@Edge: Where Each Wins

We moved a rewrite-heavy request path off Lambda@Edge to Workers and cut p95 from 340ms to 41ms. Here's when that swap pays off and when it doesn't.

KU
Kiril Urbonas·14
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The cache-control header most teams under-use. How stale-while-revalidate and stale-if-error turned our CDN from a freshness liability into a latency and resilience win — with the gotchas.
••3 months ago

Edge Caching with Stale-While-Revalidate — Fast and Fresh at the CDN

The cache-control header most teams under-use. How stale-while-revalidate and stale-if-error turned our CDN from a freshness liability into a latency and resilience win — with the gotchas.

KU
Kiril Urbonas·20
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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.
••4 months ago

CDN Cache Invalidation — Strategies That Don't Break in Production

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.

KU
Kiril Urbonas·18
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