Rael Max raelmax

Permanent WSL DNS Fix (WSL 2.2.1+)

If you're encountering ping github.com failing inside WSL with a Temporary failure in name resolution, you're not alone — this has been a long-standing issue, especially when using VPNs or corporate networks.

This issue is now fixed robustly with DNS tunneling, which preserves dynamic DNS behavior and avoids limitations like WSL’s former hard cap of 3 DNS servers in /etc/resolv.conf.

DNS tunneling is enabled by default in WSL version 2.2.1 and later, meaning that if you're still seeing DNS resolution issues, the first and most effective fix is simply to upgrade WSL. Upgrading WSL updates the WSL platform itself, but does not affect your installed Linux distributions, apps, or files.

To upgrade WSL, follow these steps,

Some books I've been studying to improve my skills as a SRE/System Engineer.

System Design Cheatsheet

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

Basic Steps

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?

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

	* {
	font-size: 12pt;
	font-family: monospace;
	font-weight: normal;
	font-style: normal;
	text-decoration: none;
	color: black;
	cursor: default;
	}

	from bottle import route, run, auth_basic
	from passlib.hash import sha256_crypt

	def check_pass(username, password):
	hashed = ''.join(redis.hmget(username, "password"))
	return sha256_crypt.verify(password, hashed)

	@route('/', method='GET')
	@auth_basic(check_pass) # <-- decorator
	def index():

	#!/usr/bin/env bash
	if [[ ! -f "$1" ]]; then
	echo "=> Movie file not found"
	exit 1
	fi

	tempfile=/tmp/output.gif

	rm -f $tempfile

	from bottle import get, run, request, post, Bottle, abort, error, response, debug, redirect

	# This is a dictionary endpoint. It retrieves definitions for words.
	# You can also add words to the dictionary.

	# this allows our bottle application to be accessible outside this file
	app = Bottle()

	dictionary = {
	"lugubrious": "extremely sad",

	[
	{
	"tema": "Desenvolvimento mobile por onde começar?",
	"autor": "Nonilton",
	"objetivo": ""
	},
	{
	"tema" : "(RWD) Responsive Web Design: Por uma interface na medida",
	"autor": "Emmanuel",
	"objetivo": "O objetivo seria conscientizar os novos desenvolvedores da importância do desenvolvimento responsivo e tornar claro aos que pretendem iniciar na programação web que o RWD é um caminho sem volta."