Bryon Larrance beelarr

System Design Cheatsheet

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

Basic Steps

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?

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

Originally published in June 2008

When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.

To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.

What to expect

Candidates will typically give you a range of responses based on their experience and personality. So it's up to you to decide the correctness of their answer.

	// Modified from @mutsuda's https://medium.com/@mutsuda/create-an-ios-widget-showing-google-spreadsheets-data-856767a9447e
	// by @levelsio

	// HOW TO
	// 1) Make a Google Sheet, we'll pull the first cell e.g. A1
	// 2) Publish your Google Sheet, File -> Publish To Web
	// 3) Copy the SHEET_ID in the URL, put it in here below:
	const endpoint = "https://spreadsheets.google.com/feeds/cells/SHEET_ID/1/public/full?alt=json"
	// 4) Install Scriptable @ https://apps.apple.com/us/app/scriptable/id1405459188
	// 5) Copy this entire script in to Scriptable (tip: you can send it to your iPhone via Whatsapp/Messenger/Telegram etc)

	// Modified from @mutsuda's https://medium.com/@mutsuda/create-an-ios-widget-showing-google-spreadsheets-data-856767a9447e
	// by @levelsio

	// HOW TO
	// 1) Make a Google Sheet, we'll pull the first cell e.g. A1
	// 2) Publish your Google Sheet, File -> Publish To Web
	// 3) Copy the SHEET_ID in the URL, put it in here below:
	const endpoint = "https://spreadsheets.google.com/feeds/cells/SHEET_ID/1/public/full?alt=json"
	// 4) Install Scriptable @ https://apps.apple.com/us/app/scriptable/id1405459188
	// 5) Copy this entire script in to Scriptable (tip: you can send it to your iPhone via Whatsapp/Messenger/Telegram etc)

	#!/usr/bin/env python
	from bs4 import BeautifulSoup
	from twilio.rest import TwilioRestClient
	import json
	import os
	import re
	import requests


	url = 'https://postmates.com/los-angeles'

	#!/usr/bin/env python
	from bs4 import BeautifulSoup
	from twilio.rest import TwilioRestClient
	import json
	import os
	import re
	import requests


	url = 'https://postmates.com/los-angeles'