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South Africa as a test location
05-17-2020, 12:59 AM
Post: #3
RE: South Africa as a test location
South Africa is here now, on Azure. However I noticed that (as of a few days ago, at least) if you're using Azure CDN from Microsoft with an Azure VM, requests for the closest Anycast node are being routed to Europe, not South Africa (see "Update 2" in that link). This results in requests to CDN endpoints taking ~200ms (if cached), rather than ~20ms. Worth bearing in mind if you use them.

The test node appears to be hosted elsewhere and ironically does hit a local Microsoft CDN node.

This should not be confused with old IP Geolocation databases not reflecting that Azure VM IP range is in South Africa, although that is also an issue (and perhaps is part of why the IP routing is as it is).

It should also not be confused with the main issue at the above page: misses from South Africa edge nodes going to Europe and then being requested from there - which is probably the right choice if your CDN origin is in Europe, but not if it's in South Africa as well.

In short: if you're trying to get high performance in South Africa, testing is key - and you should probably try multiple test providers.
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RE: South Africa as a test location - GreenReaper - 05-17-2020 12:59 AM

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