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?

cmchap

#!/usr/bin/python

#########
# About #
#########

# This script uses a Raspberry Pi to sense for the presense or absense of water. 
# If there is water, an email is sent and a buzzer goes off.
# When it's dry again, another email is sent, and the buzzer turns off.

knutfh

For a fresh install of a Mac to my likings

get my passwords available

• download and install dropbox
• pause dropbox syncing (to allow faster downloads of other stuff)
• download 1password app
• download 1password agilekeychain and replace the un-synced one in my dropbox with it
• start 1password and choose the correct keychain

seancron

#My implementation:
for i in xrange(0, 480, 3):
     for j in xrange(0, 640, 3):
             if depth[i,j] > 900:
                     final[i,j] = depth[i,j]