21CTO

Aug 5, 2020 · Databases

Understanding Distributed Transactions: 2PC, 3PC, Calvin, Spanner, and More

Distributed transactions require careful coordination to maintain consistency across multiple nodes, and this article explores core concepts such as atomic operations, two‑phase and three‑phase commit protocols, deterministic Calvin ordering, Google Spanner’s TrueTime and Paxos‑based approach, as well as advanced techniques like Percolator, RAMP, and coordination avoidance.