Quiz

2988 questions of the kind that actually get asked — in interviews, in architecture review boards, and by the person who has to run the thing at 3 AM. Every answer states the trade-off rather than the slogan, and says when the obvious choice is the wrong one.

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3 questions in Concurrency.

Quiz

A platform must handle millions of concurrent connections per process cluster where most connections are idle most of the time. Which concurrency model fits, and what does the wrong choice cost?

A service holds a concurrency limit of 60 with a 50 ms mean service time and serves clients that give up after 2 seconds. Offered load triples. Where should the excess requests wait?

Why is limiting concurrency more effective than limiting request rate when protecting a service?