Adam Matan adamatan

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

Benchmarking Nginx with Go

There are a lot of ways to serve a Go HTTP application. The best choices depend on each use case. Currently nginx looks to be the standard web server for every new project even though there are other great web servers as well. However, how much is the overhead of serving a Go application behind an nginx server? Do we need some nginx features (vhosts, load balancing, cache, etc) or can you serve directly from Go? If you need nginx, what is the fastest connection mechanism? This are the kind of questions I'm intended to answer here. The purpose of this benchmark is not to tell that Go is faster or slower than nginx. That would be stupid.

So, these are the different settings we are going to compare:

Go HTTP standalone (as the control group)
Nginx proxy to Go HTTP
Nginx fastcgi to Go TCP FastCGI
Nginx fastcgi to Go Unix Socket FastCGI

Convert sequence of JPEG images to MP4 video

Simple glob:

ffmpeg -r 24 -i '*.JPG' -s hd1080 -vcodec libx264 timelapse.mp4

Start from DSC_0079.JPG

ffmpeg -r 24 -f image2 -start_number 79 -i DSC_%04d.JPG -s hd1080 -vcodec libx264 timelapse2.mp4

Creating a `Jekyll` blog on GitHub Pages with Minimal-Mistakes

Setup

First, create a new Jekyll site and corresponding GitHub Pages repository, then test it locally at http://localhost:4000:

$ gem install jekyll bundler
$ jekyll new <REPO>/
Running bundle install in /Users/<USER>/Development/GitHub/<REPO>...

	# -- coding: utf-8 --

	import asyncio
	import uvloop
	from aiohttp.web import Application, MsgType, WebSocketResponse


	def add_socket(app, socket, user_id):
	if user_id in app['connections']:
	pass

	variable "aws_region" {
	default = "eu-west-1"
	}

	variable "domain" {
	default = "my_domain"
	}

	provider "aws" {
	region = "${var.aws_region}"

	a = open("/Users/Ron/words.txt").read().decode("utf8").split()
	first_row = ["ק", "ר", "א", "ט", "ו", "ן", "ם", "פ"]
	second_row = ["ש", "ד", "ג", "כ", "ע", "י", "ח", "ל", "ך", "ף"]
	third_row = ["ז", "ס", "ב", "ה", "נ", "מ", "צ", "ת", "ץ"]
	first_row = [x.decode("utf8") for x in first_row]
	second_row = [x.decode("utf8") for x in second_row]
	third_row = [x.decode("utf8") for x in third_row]

	only_first = sorted([(len(x), x) for x in a if all(y in first_row for y in x)])
	only_second = sorted([(len(x), x) for x in a if all(y in second_row for y in x)])

	const puppeteer = require('puppeteer');

	(async () => {

	const browser = await puppeteer.launch();
	const page = await browser.newPage();
	// Adjustments particular to this page to ensure we hit desktop breakpoint.
	page.setViewport({width: 1000, height: 600, deviceScaleFactor: 1});

	await page.goto('https://www.chromestatus.com/samples', {waitUntil: 'networkidle'});