vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?

JadenGeller

// Numerical matrix examples

let x: Matrix = [[10, 9, 8], [3, 2, 1]]
let y: Matrix = [[1, 2, 3], [4, 5, 6]]
let z: Matrix = [[1, 2], [3, 4], [5, 6]]

x + y              // [[11, 11, 11], [7, 7, 7]]
x * y              // [[10, 18, 24], [12, 10, 6]]
2 * x              // [[20, 18, 16], [6, 4, 2]]
y ** z             // [[22, 28], [49, 64]]