arpitbbhayani

# create table topics!
create table topics (
    id int primary key auto_increment,
    name varchar(256),
    parent_id int null,
    type smallint not null,

    foreign key (parent_id) references topics(id),
    index(type)
);

exAspArk

openssl genrsa -out CAroot.key 2048
openssl req -new -key CAroot.key -out CAroot.csr # CN should be different from the certificates below
openssl req -x509 -days 1825 -key CAroot.key -in CAroot.csr -out CAroot.crt
cat CAroot.crt CAroot.key > CAroot.pem

openssl genrsa -out mongod.key 2048
openssl req -new -key mongod.key -out mongod.csr
openssl x509 -req -days 1825 -in mongod.csr -CA CAroot.pem -CAkey CAroot.key -CAcreateserial -out mongod.crt
cat mongod.crt mongod.key > mongod.pem

345161974

package main

import (
	"database/sql"
	"gopkg.in/gorp.v1"
	"log"
	"strconv"

	"github.com/gin-gonic/gin"
	_ "github.com/go-sql-driver/mysql"

palkan

# if you want to render flamegraphs
gem "stackprof", require: false # required by flamegraph
gem "flamegraph", require: false

hugodias

DigitalOcean Ubuntu 14.04 x64 + Rails 4 + Nginx + Unicorn + PostgreSQL + Capistrano 3

Create a Droplet

SSH into Root

$ ssh root@123.123.123.123

Change Root Password

learncodeacademy

Here's all you have to do to add clustering to your node.js application.

• save this code as cluster.js, and run cluster.js instead of server.js (or /bin/www, or whatever it's called for your project)
• the only line you'll need to change is the last line - it needs to point to the location of your server.js file

var cluster = require('cluster');

if (cluster.isMaster) {
  // Count the machine's CPUs
 var cpuCount = require('os').cpus().length;

davidcelis

upstream puma {
  server unix:///var/www/app/shared/tmp/sockets/puma.sock fail_timeout=0;
}

server {
  listen 80 default deferred;
  server_name example.com;
  rewrite ^/(.+) https://example.com/$1 permanent;
}

leemour

#Timecop is fun, but you don't need a whole gem for that. Just use
#Time.stub(:now), e.g.

describe "time" do
  before do
    @fake_time = Time.now
    Time.stub(:now) { @fake_time }
  end
  it "is equal" do
    Time.now.should == Time.now  # now it passes

ChengLong

If you see this error when cron job runs a ruby script:

'require': cannot load such file ...

And you are using bundler e.g. require 'bundler/setup'. It's probably because the directory where cron runs the script is not correct, resulting in bundler fails to load gems.

Simply changed the directory to fix it, i.e.

* * * * * /usr/local/bin/ruby -C /home/example/scripts example_script.rb >>/home/example/log/cron.log 2>&1

SirRawlins

# Drop this into /spec/support/matchers
# Usage: result.should be_url
# Passes if result is a valid url, returns error "expected result to be url" if not.

# Matcher to see if a string is a URL or not.
RSpec::Matchers.define :be_url do |expected|
	# The match method, returns true if valie, false if not.
	match do |actual|
		# Use the URI library to parse the string, returning false if this fails.
		URI.parse(actual) rescue false