Pedro Spagiari phspagiari

System Design Cheatsheet

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

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?

I hereby claim:

I am phspagiari on github.
I am spagiari (https://keybase.io/spagiari) on keybase.
I have a public key whose fingerprint is 184C 0B99 AA5E E648 1E56 6DC0 FDD3 0757 B27F C14E

To claim this, I am signing this object:

	#!/bin/bash

	# Works for /16 CIDR Blocks, change / upgrade the script if you need
	CIDR_PREFIX="172.20"

	for oct1 in {128..255}; do
	# Generate a new list of used IPs on every block
	calicoctl get wep --all-namespaces \| awk '{print $4}' \|cut -d "/" -f1 > valid_ips.txt
	for oct2 in {1..254}; do
	if grep "${CIDR_BLOCK}.$oct1.$oct2" ./valid_ips.txt; then