Day 2 Check Key Value and Caching Internals

Check yourself

Ten questions on the two designs from Day 2, the distributed cache and the key value store. Both shard with consistent hashing and both keep three copies, yet they make opposite choices about durability, routing and how they reclaim space. Several of these ask you to explain why.

You will be asked 10 questions drawn from a larger bank, so a second attempt will not be the same paper. Answer from what the designs actually said, not from what sounds sensible in general.