Interview Q&A / System Design
System Design interview questions
Caching, scaling, databases and classic design problems for beginners.
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- How does DNS-based global load balancing route users to the nearest data centre?
The DNS service answers with a different IP depending on where the user is, which server is healthy, or latency measurements. Users in Mumbai get the Mumbai address, users in London get London's.
IntermediateQuick answer1 min read