how does a cdn handle content replication?
just published a detailed write-up on cdn and content replication. it’s a no-fluff piece covering all the key details you need to know about cdns, ttl, invalidation, replication strategies, configurations, and even pseudocode to understand the internals. some key things I cover are:
- push-based cdn (great for stable/time-sensitive assets)
- pull-based cdn (efficient for unpredictable demand)
- blending both for more efficient replication strategies
- how they are made highly available
- how cache freshness is managed
if you’re curious about cdn, give it a read.