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> When e.g. AWS Cloudfront, Amazon's Content Delivery Network talks about "Edge Caching" it simply refers to the Amazon datacenter closest to whoever requests t
by apendleton 8y ago
> When e.g. AWS Cloudfront, Amazon's Content Delivery Network talks about "Edge Caching" it simply refers to the Amazon datacenter closest to whoever requests the site.
Kind of? If by "datacenter" they mean the things they said earlier that AWS had 18 of, then no, not really. There are many more Cloudfront points of presence that there are AWS regions (over 100 of the former). In practice unless someone lives very close to a proper AWS region (like I do here in DC), odds are there's a Cloudfront PoP much closer to them than a "datacenter" (i.e., AWS region).
- stingraycharles 8y agoThis is correct. A PoP can very well be an ISP’s datacenter, even if they usually do not provide hosting / colocation services, because it’s in their own interest since it reduces their overall bandwidth usage.
- WaxProlix 8y agoIt seems a bit nit-picky, but AWS has ~18 commercial regions, but far more datacenters. It's availability zone that's a data center (more or less), not a region. So for each region you end up with 3 to 5 data centers or something like that.
- Dunedan 8y agoEven a single AZ might consist of multiple datacenters.