Cianplan

Level 2: Data · L2.5 Consistency models, CAP & PACELC

PACELC: latency vs consistency every day

Classify real databases as PA/EL or PC/EC.

11 min · Pro

What you take away

  • PACELC: if Partition, choose Availability or Consistency; Else, choose Latency or Consistency.

And 3 more inside the class, in Pro.

How the class is laid out

  1. The problem
  2. The simple version
  3. Classifying real systems
  4. Check your understanding