I'm curious, it's said that CDNs reduce latency by hosting static content on servers close to users. How does this infrastructure change the load on the backend? Does it work automatically without any optimization, or does it require additional settings?
How does a CDN affect performance?
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Ah, that's a really interesting point. Opinions vary on how CDNs impact backend load. Think about it—when static content like JS, CSS, and images are distributed to edge servers via a CDN, the backend is left handling only dynamic requests. But what if we're dealing with a high-traffic e-commerce site? While a CDN reduces backend pressure for uncached dynamic content (like personal carts), it all depends on your caching strategies. It doesn’t work automatically—you need to fine-tune settings like cache TTLs, purge rules, and even custom headers for varied content. So, in your use case, how do you plan to optimize cache durations?