evanderkoogh’s gists

evanderkoogh / index.js

Created October 3, 2018 10:24

How to execute promises both serially and in parallel

	const wait = async (time) => {
	console.log(`Going to be waiting for ${time} seconds`)
	return new Promise((resolve) => {
	setTimeout(() => {
	console.log(`Done waiting for ${time} seconds!`)
	resolve()
	}, time * 1000)
	})
	}

evanderkoogh / index.js

Created August 24, 2018 05:18

Add and/or overwrite values in a DynamoDB table with the Document Client

	const AWS = require('aws-sdk')

	const docClient = new AWS.DynamoDB.DocumentClient()

	const mapKeys = (input, transform) => {
	const output = {}
	Object.keys(input).forEach((key, index, array) => {
	output[transform(key, index, array)] = input[key]
	})
	return output

evanderkoogh / example.csv

Created November 20, 2017 13:29

Import CSV into DynamoDB

evanderkoogh / gist:f9012bc0163b6d9f2bde49046d8cf720

Created April 23, 2017 15:18

Example Edge@Lambda in AWS Cloudfront. Change URI based on host header

	'use strict';

	/*
	* HTTP headers are case-insensitive. So 'Host' is a valid header, but so
	* is 'host' or 'hOst'. To make sure we don't miss a header we first lowerCase
	* all of them and then check for the lowercase version of the header
	*/
	const normaliseHeaders = (headers) => {
	const normalisedHeaders = {};
	const fields = Object.keys(headers);

evanderkoogh / client.js

Created December 29, 2015 13:52

Reproduce problem in request/request with regards to maxSocket & timeouts

	var request = require('request');

	request = request.defaults({agentOptions: {maxSocket: 1}, timeout: 1200});

	for(i=0;i < 10;i++) {
	console.log("Requesting");
	request.get("http://localhost:3000/", function(err, res, body) {
	if(err) {
	console.log(err);
	}

evanderkoogh / gist:2ae2904aff498e050061

Created October 19, 2014 06:36

Store a realtime stream of Twitter search in Redis DB

	redis = require('redis').createClient process.env['REDIS_PORT_6379_TCP_PORT'], process.env['REDIS_PORT_6379_TCP_ADDR']
	redis.select 1
	Twitter = require 'twitter'
	credentials =
	consumer_key: process.env.TWITTER_CONSUMER_KEY
	consumer_secret: process.env.TWITTER_CONSUMER_SECRET
	access_token_key: process.env.TWITTER_ACCESS_TOKEN_KEY
	access_token_secret: process.env.TWITTER_ACCESS_TOKEN_SECRET
	twitter = new Twitter credentials

Erwin van der Koogh evanderkoogh