CAP Twelve Years Later: How the "Rules" Have ChangedCAP Twelve Years Later: How the "Rules" Have Changed: "The CAP theorem states that any networked shared-data system can have at most two of three desirable properties:
consistency (C) equivalent to having a single up-to-date copy of the data;
high availability (A) of that data (for updates); and
tolerance to network partitions (P).
'via Blog this'