jbritton

GraphQL Cheat Sheet

Overview

• An alternative approach to RESTful APIs
• Clients issue queries/mutations to read and update data
• Clients can fetch only the entity fields that are required
• GraphQL query syntax can express complex entity relations => nested objects
• Mitigates the explosion of RESTful endpoints in scenarios where many different representations of an entity are needed
• Graphiql is a query execution UI, also provides good documentation

smijar

# from:https://quicktechnotes.wordpress.com/2017/01/02/how-to-install-mongodb-elasticsearch-and-graylog-on-centos-7/

# Install EPEL
sudo rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
sudo yum -y install pwgen

sudo yum -y update

# Add mongodb repo.
sudo vi /etc/yum.repos.d/mongodb-org-3.2.repo

LeCoupa

docker build -t friendlyname .  # Create image using this directory's Dockerfile
docker run -p 4000:80 friendlyname  # Run "friendlyname" mapping port 4000 to 80
docker run -d -p 4000:80 friendlyname         # Same thing, but in detached mode
docker exec -it [container-id] bash                  # Enter a running container
docker ps                                 # See a list of all running containers
docker stop <hash>                     # Gracefully stop the specified container
docker ps -a           # See a list of all containers, even the ones not running
docker kill <hash>                   # Force shutdown of the specified container
docker rm <hash>              # Remove the specified container from this machine
docker rm $(docker ps -a -q)           # Remove all containers from this machine

LeCoupa

# Redis Cheatsheet
# All the commands you need to know


redis-server /path/redis.conf  # start redis with the related configuration file
redis-cli                      # opens a redis prompt


# Strings.

scootcho

initialize git depository in the current directory

git init .

display the git remote/origin

cat .git/config

chrissimpkins

Use these rapid keyboard shortcuts to control the GitHub Atom text editor on macOS.

Key to the Keys

• ⌘ : Command key
• ⌃ : Control key
• ⌫ : Delete key
• ← : Left arrow key
• → : Right arrow key
• ↑ : Up arrow key

sheharyarn

#!/bin/bash
 
MONGO_DATABASE="your_db_name"
APP_NAME="your_app_name"

MONGO_HOST="127.0.0.1"
MONGO_PORT="27017"
TIMESTAMP=`date +%F-%H%M`
MONGODUMP_PATH="/usr/bin/mongodump"
BACKUPS_DIR="/home/username/backups/$APP_NAME"

LeCoupa

# NPM CheatSheet.
# Super easy intall: npm comes with node now.
# To create your own npm package: https://www.npmjs.org/doc/misc/npm-developers.html
# More: https://www.npmjs.org/doc/


# 1. NPM Command Lines.
# Local mode is the default.
# Use --global or -g on any command to operate in global mode instead.

mikaelbr

// === Arrays

var [a, b] = [1, 2];
console.log(a, b);
//=> 1 2


// Use from functions, only select from pattern
var foo = () => [1, 2, 3];

jamesoff

db.twitter.aggregate( 
		{ $group : { 
								 "_id" : "$user.screen_name", 
								 "tweets" : { $sum : 1 } 
							 } 
		},
		{ $sort : { "tweets" : -1 } },
		{ $limit : 5 } 
)