Francisco Caballero fjcero

On implementing a client for feature flags in your UI codebase

This document isn't an explainer on Feature Flags, you can find that with my amateur writeup, or literally hundreds of better writeups out there.

This document is also agnostic to the choice of service you'd use: LaunchDarkly or split.io or optimizely or whatever; that's orthogonal to this conversation.

Instead, this document is a list of considerations for implementing a client for using Feature Flags for User Interface development. Service providers usually give a simple fetch and use client and that's it; I contend that there's a lot more to care about. Let's dive in.

To encourage usage, we'd like for the developer experience to be as brutally simple as possible. So, this should be valid usage:

Note: Since writing this, I've been pointed to some exciting new research/tooling called Project Cambria https://www.inkandswitch.com/cambria.html I'll likely have to rewrite this article taking that into account. Leaving this up for posterity's sake.

(This series isn't meant to be a primer/tutorial, though we might do something regarding it in the future. For official documentation and starters, see https://developers.cloudflare.com/workers/learning/using-durable-objects.

Further - these are my personal views; I expect to be wrong about a lot of them. Indeed, I'm not paying much attention to presenting these well at the moment, simply writing down thoughts. As such, expect these writeups to change often, particularly as the platform takes shape. I'm also mostly a front end guy, so don't get mad if I get it very wrong. Give me feedback! Always happy to learn and make changes.)

Durable Objects are a fascinating new storage primitive from cloudflare for their workers platform. There's a lot of 'cool'

GraphQL

Structuring App

https://medium.com/@colecodes/structuring-data-with-apollo-server-e114a302aec7 https://github.com/entria/graphql-dataloader-boilerplate https://github.com/thebigredgeek/apollo-resolvers/blob/master/src/resolver.ts

Authorization strategies

Data Model based: https://blog.apollographql.com/authorization-in-graphql-452b1c402a9

Note

For every body who using Win10/11 with new Office that you need to know:

to active Office without crack, just follow https://github.com/WindowsAddict/IDM-Activation-Script,

you wiil only need to run

irm https://massgrave.dev/ias | iex

INTRO

Concurrency is a domain I have wanted to explore for a long time because the locks and the race conditions have always intimidated me. I recall somebody suggesting concurrency patterns in golang because they said "you share the data and not the variables".

Amused by that, I searched for "concurrency in golang" and bumped into this awesome slide by Rob Pike: https://talks.golang.org/2012/waza.slide#1 which does a great job of explaining channels, concurrency patterns and a mini-architecture of load-balancer (also explains the above one-liner).

Let's dig in:

Goroutines

What I Wish I'd Known About Equity Before Joining A Unicorn

Disclaimer: This piece is written anonymously. The names of a few particular companies are mentioned, but as common examples only.

This is a short write-up on things that I wish I'd known and considered before joining a private company (aka startup, aka unicorn in some cases). I'm not trying to make the case that you should never join a private company, but the power imbalance between founder and employee is extreme, and that potential candidates would

Simple Webhook Tutorial

In this tutorial, I will be explaining how to set up a simple webhook to relay your tweets to a Discord channel

Step 1 - Register on Zapier

Go to https://zapier.com/ and create an account (if you don't already have one).

Step 2 - Make a Discord Webhook

Find the Discord channel in which you would like to send Tweets

	<!doctype html>
	<html>
	<head>
	<title>Video Test</title>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	</head>
	<body>
	<p>
	Here's a small local video. (Copy from http://techslides.com/demos/sample-videos/small.mp4)

	#!/bin/bash
	#
	# Restart Bluetooth Module on Mac OS X
	#
	# Requires Blueutil to be installed: http://brewformulas.org/blueutil

	BT="/usr/local/bin/blueutil"

	log() {
	echo "$@"

	upstream ws_server {
	server 127.0.0.1:8080;
	}

	server {
	listen 80;
	server_name 10.1.2.225;

	location / {
	proxy_pass http://ws_server/;