briancain

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?

briancain

#!/bin/bash

# Generate a `:something-intensifies:` Slack emoji, given a reasonable image
# input. I recommend grabbing an emoji from https://emojipedia.org/

set -euo pipefail

# Number of frames of shaking
count=10
# Max pixels to move while shaking

briancain

(ns markov.core)

(defn transform
  [words]
  (->> words
       (partition 2 1)
       (reduce (fn [acc [w next-w]]
                 (update-in acc
                            [w next-w]
                            (fnil inc 0)))