Spanner in a Nutshell

#Google Cloud #Professional Data Engineer Certfication #Spanner #Relational Database #Database


This post is part of a series of posts with notes as I’m studying for Google’s Professional Data Engineer Certification.

This particular post covers Spanner in a nutshell.


Please read this disclaimer.


  • Horizontally scalable
  • No-ops
    • Only change needed is to add nodes
    • Add another node if CPU > 70-75%
    • Each node can handle 1.5 - 2 TB
  • Can create linked/embeded tables
    • Helps avoid the cost of joins for normalized tables
  • Two payment methods:
    • Pay-by-node: standard method
    • Pay-by-processing-unit: let’s you pay for more granular operations/scale
    • 1 node = 1,000 processing units