Interview prep that answers like an engineer
Real interview questions with answers you can say out loud: the core claim first, then the production trade-off. Read a deck as a list, or drill it as flashcards and grade yourself; progress stays on this device, no account. Every answer links back into the tracks and guides when you want the long version.
Q · system design deck
Where does the cache go, and who invalidates it?
A · say it out loud
As close to the reader as staleness allows. The writer owns invalidation: write-through for correctness, TTL as the backstop.
flip · answer · grade yourself · progress stays on this device
