Ilker Eroglu ilkereroglu

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I hereby claim:

I am ilkereroglu on github.
I am ilkereroglu (https://keybase.io/ilkereroglu) on keybase.
I have a public key ASB65HaPtUnJ9-urvM0b57JYALAXlmVmW15c23BuqBnKbQo

To claim this, I am signing this object:

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

How to Install GO Lang on CentOS / Amazon Linux?

sudo wget https://storage.googleapis.com/golang/go1.4.2.linux-amd64.tar.gz
tar -xzf go1.4.2.linux-amd64.tar.gz 
export GOROOT=PATH_WHERE_YOU_EXTRACT_GO
export PATH=$PATH:$GOROOT/bin 
export GOBIN=$GOROOT/bin 
mkdir ~/golang/ 
export GOPATH=~/golang/

Installing mailx

yum -y update

yum install -y mailx

We can now start sending e-mails using

Configure eth0

vi /etc/sysconfig/network-scripts/ifcfg-eth0

TYPE="Ethernet"
BOOTPROTO="none"
DEFROUTE="yes"

	app.post('/selam', function (req, res, next) {
	var userName = req.body.user_name;
	var bot = {
	text : userName + 'Ooo cahil bey hoşgeldiniz.'
	};

	if (userName !== 'slackbot') {
	return res.status(200).json(bot);
	} else {
	return res.status(200).end();

	var express = require('express');
	var bodyParser = require('body-parser');

	var app = express();
	var port = process.env.PORT \|\| 1666;

	app.use(bodyParser.urlencoded({ extended: true }));

	app.get('/', function (req, res) {
	res.status(200).send('Çalışıyor...');

	{
	"name": "ilberHocaBot",
	"version": "0.0.1",
	"description": "Node Server",
	"main": "app.js",
	"author": "İlker Eroğlu",
	"license": "MIT",
	"dependencies": {
	"express": "^4.x.x",
	"body-parser": "^1.x.x",