Anwar zianwar

Concurrency Patterns in Go

Notes taken from Rob Pike's presentation 'Google I/O 2012 - Go Concurrency Patterns'.

1. Generator: function that returns a channel

The code is as follows:

c := boring("boring!")  // function returning a channel

for i := 0; i &lt; 5; i++ {

Scaling your API with rate limiters

The following are examples of the four types rate limiters discussed in the accompanying blog post. In the examples below I've used pseudocode-like Ruby, so if you're unfamiliar with Ruby you should be able to easily translate this approach to other languages. Complete examples in Ruby are also provided later in this gist.

In most cases you'll want all these examples to be classes, but I've used simple functions here to keep the code samples brief.

Request rate limiter

This uses a basic token bucket algorithm and relies on the fact that Redis scripts execute atomically. No other operations can run between fetching the count and writing the new count.

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

What's an Effective Engineer?

A curated list of AWS resources to prepare for the AWS Certifications

A curated list of awesome AWS resources you need to prepare for the all 5 AWS Certifications. This gist will include: open source repos, blogs & blogposts, ebooks, PDF, whitepapers, video courses, free lecture, slides, sample test and many other resources.

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?

##Perks of Microsoft

####Salary

Can't go into details, but can't complain at all.

####Health and Wellness Care

Medical and hospitalization: Two choices for medical insurance. Both with no premium but different deductibles.
- The two choices on medical plans are a high-deductible health plan (Microsoft puts a chunk of money into the Health Savings Account for you, which covers most of the deductible) and an HMO.
With the HMO, you pay basically nothing as long as you only go to Group Health doctors. With the high-deductible plan, you're covered under the local Blue Cross provider which means you can go to just about any doctor in the country. For

	// https://davidpiesse.github.io/tailwind-md-colours/
	//
	//Notes
	//
	//All colours are generated from Material Design Docs
	//Colours have a base, a set of shades (50-900) accent colours
	//In addition a companion set of contrast colours are included for colouring text / icons
	// Example usage
	// class="w-full bg-red-600 text-red-600-constrast"

	#!/usr/bin/env bash

	# fetch_nike_puls_all_activities.bash
	# A simple bash script to fetch all activities and metrics from NikePlus.
	# See `nike_plus_api.md` for the API details.

	readonly bearer_token="$1"
	if [[ -z "$bearer_token" ]]; then
	echo "Usage: $0 bearer_token"
	exit

	import React from "react";
	import { render } from "react-dom";

	const ParentComponent = React.createClass({
	getDefaultProps: function() {
	console.log("ParentComponent - getDefaultProps");
	},
	getInitialState: function() {
	console.log("ParentComponent - getInitialState");
	return { text: "" };

	var app = require('app');
	var Menu = require('menu');
	var Tray = require('tray');

	var appIcon = null;

	app.on('ready', function(){
	// image is null, so image will not be shown in menu bar
	// so click around on the system menu bar to locate the space where the tray icon is
	appIcon = new Tray(null);