Cornel Ghiban cghiban

Rich Hickey on becoming a better developer

Rich Hickey • 3 years ago

Sorry, I have to disagree with the entire premise here.

A wide variety of experiences might lead to well-roundedness, but not to greatness, nor even goodness. By constantly switching from one thing to another you are always reaching above your comfort zone, yes, but doing so by resetting your skill and knowledge level to zero.

Mastery comes from a combination of at least several of the following:

Golang Workers / Job Queue

A running example of the code from:

This gist creates a working example from blog post, and a alternate example using simple worker pool.

TLDR: if you want simple and controlled concurrency use a worker pool.

Raspberry Pi on Internet via reverse SSH tunnel

HackerNews discussed this with many alternative solutions: https://news.ycombinator.com/item?id=24893615

I already have my own domain name: mydomain.com. I wanted to be able to run some webapps on my Raspberry Pi 4B running perpetually at home in headless mode (just needs 5W power and wireless internet). I wanted to be able to access these apps from public Internet. Dynamic DNS wasn't an option because my ISP blocks all incoming traffic. ngrok would work but the free plan is too restrictive.

I bought a cheap 2GB RAM, 20GB disk VM + a 25GB volume on Hetzner for about 4 EUR/month. Hetzner gave me a static IP for it. I haven't purchased a floating IP yet.

	#!/bin/bash

	# can't remember where I found this..
	#
	# THIS SCRIPT CONVERTS EVERY MP4 (IN THE CURRENT FOLDER AND SUBFOLDER) TO A MULTI-BITRATE VIDEO IN MP4-DASH
	# For each file "videoname.mp4" it creates a folder "dash_videoname" containing a dash manifest file "stream.mpd" and subfolders containing video segments.
	# Explanation:


	# Validation tool:

	#!/bin/bash

	#############################################
	#
	# mp4-to-gif
	#
	# Convert MP4 videos to GIF images
	# Requires ffmpeg and imagemagick
	#
	# -g and --gifsicle options create a second optimised GIF for your consideration

	package main

	import (
	"bufio"
	"fmt"
	"io"
	"log"
	"net/http"
	"net/url"
	"os"

	#!/usr/bin/env bash

	if [ -z "$1" ]; then
	echo "Usage: $0 <iterations>"
	exit 1
	fi

	# Display product ID, category, title, price, num orders
	# ordered by top products limit 10
	function top_products(){

	CREATE TRIGGER person_notify AFTER INSERT OR UPDATE OR DELETE ON income
	FOR EACH ROW EXECUTE PROCEDURE notify_trigger(
	'id',
	'email',
	'username'
	);

	CREATE TRIGGER income_notify AFTER INSERT OR UPDATE OR DELETE ON income
	FOR EACH ROW EXECUTE PROCEDURE notify_trigger(
	'id',

	.
	├── go.mod
	├── handlers
	│ ├── books
	│ │ └── books.go
	│ └── env.go
	├── main.go
	└── models
	└── models.go

	.
	├── config
	│ └── config.go
	├── go.mod
	├── go.sum
	├── main.go
	└── models
	└── books
	└── books.go