Adam advincze

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

	#!/usr/bin/env python3

	"""
	Usage:
	- Save this script somewhere on your path (e.g. `vi /usr/local/bin/aws-console && chmod +x /usr/local/bin/aws-console`)
	- Make AWS credentials available in one of the usual places where boto3 can find them (~/.aws/credentials, env var, etc.)
	- Excute the script: `aws-console --profile myprofile`
	- :tada: Your browser opens and you are signed in into the AWS console
	"""

	package main

	import (
	"os"
	"testing"
	)

	func TestGetSHA(t *testing.T) {
	sha, err := getSHA1()
	if err != nil {

	"test case": {
	"prefix": "test",
	"body": [
	"func Test_$1(t *testing.T) {",
	" testCases := []struct {",
	" input string",
	" output string",
	" }{",
	" {\"\",\"\"},",
	" }",

	ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
	# Don't add passphrase
	openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
	cat jwtRS256.key
	cat jwtRS256.key.pub