The engineering questions you get asked, and the bugs you actually hit. Drawn, one mechanism at a time, in the order the videos ship.
Why synchronous Two-Phase Commit (2PC) fails in cloud microservices, and how the asynchronous Saga pattern coordinates distributed transactions with compensating rollbacks.
A deep dive into distributed consensus, linearizability, PACELC theorem, and choosing between immediate consistency and high-throughput low latency.
How Raft consensus, heartbeat timers, and majority quorum rules ensure only one node coordinates writes and prevent irreversible state divergence.
Why naive modulo hashing causes catastrophic cache stampedes when resizing clusters, and how the 360-degree hash ring bounds key remapping to K/N.
You cannot choose CA in distributed systems because network partitions are unavoidable. The real architectural tradeoff is between CP and AP during a network split.
