On the ‘net: CAP and SDN

The CAP theorem essentially states that consistency, accessibility, and portioning are three sides of a tradeoff triangle. Much like quick, cheap, and quality; or state, optimization, and surface; CAP posits that you can choose “two out of three.” To illustrate, it is often helpful to consider a database in various stages of being partitioned, and consider the impact on consistency and accessibility, the other two sides of the triangle. The figure below will be used as a reference. —ECI