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Web application database migration strategies

Since the database is separate from the application and changes cannot be made to both simultaneously, there are various strategies for keeping them in sync.

Fully-coupled

Many web applications are deployed by:

1. stopping the application
2. running any database migrations

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✨ Download Slack Emoji ✨

Quick way to export your Slack team's emoji (concurrently!)

Prerequisites

• aria2 (brew install aria2)
• ruby

1. Create an API token for your Slack team

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# this is an example of the Uber API
# as a demonstration of an API spec in YAML
swagger: '2.0'
info:
  title: Pastebin
  description: A simple pastebin service
  version: "1.0.0"
  
host: localhost:8000
schemes:

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Type	Length (bits)	Minimum value	Maximum value
u8	8	0	255
i8	8	-128	127
u16	16	0	65,535
i16	16	-32,768	32,767
u32	32	0	4,294,967,295
i32	32	-2,147,483,648	2,147,483,647
u64	64	0	18,446,744,073,709,551,615
i64	64	-9,223,372,036,854,775,808	9,223,372,036,854,775,807

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This compiles:

extern crate hyper;
use std::{thread, time};

use hyper::server::{Server, Request, Response};
use hyper::uri::RequestUri::*;

fn hello(req: Request, res: Response) {

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Elixir list vs tuple benchmark

Lists

Length

  size             i/s             μ/i
   10k        28051.11           35.65
  100k         3251.63          307.54

1m 512.33 1951.87

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#!/usr/bin/env ruby

# Usage:
# ./twitter_intersect username1 username2

# You'll need to `gem install twitter`
require 'twitter'

# see: https://dev.twitter.com/oauth/overview/application-owner-access-tokens
@client = Twitter::REST::Client.new do |config|

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#!/usr/bin/env ruby

# Usage:
# ./followers_in_common maxholder sandimetz

# You'll need to `gem install twitter`
require 'twitter'

# see: https://dev.twitter.com/oauth/overview/application-owner-access-tokens
client = Twitter::REST::Client.new do |config|

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if(pointsRight === 5){
   console.log("<p><p><h1><color="green">Congratulations! You got them all right! You've won the gold crown! Aren't you smart?</p>");
} else if(pointsRight === 4 || pointsRight === 3){
   console.log("<p>Congratulations! You got " + pointsRight " right! Here's a silver crown!"</p>);
} else if(pointsRight === 2 || pointsRight === 1){
   console.log("<p>Congratulations! You got " + pointsRight " right! Here's a bronze crown!"</p>);
else{
   console.log(<p>"Congratulations! You got " + pointsRight " right and " + pointsWrong " wrong here's your nega-crown.</p>");
}

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So you want to have pretty URLs with no trailing slash or .html like:

http://mysite.com/blog/my-new-kitten

not like:

http://mysite.com/blog/my-new-kitten/

or