Quorum
A quorum is how many replicas must respond for an operation to count — and overlapping read and write sets is what lets a read see the last write.
-
-
CAP Theorem
CAP forbids perfect consistency with perfect availability during a partition — a narrower claim than the “pick two of three” framing suggests.
-
Quality Attributes: A Shared Language for Judging Systems
Fast, reliable, and scalable mean different things to different teams. Define each quality precisely, measure it, and see where improving one costs another.