Lee Trout leetrout

OSRM North America route server on EC2

Overview

OSRM route server is an extremely useful tool for getting the driving distance/time through multiple locations. The route server requires data that has to be downloaded and processsed before it can be used to serve routes from.

Processing OSRM data for large region like North America can be a real challenge due to memory and disk size requirements. It's also really time consuming. If you cut and try from scratch, you will repeatedly run into some constraints and fail after hours of running.

The following are summary notes from trying this with eventual success.

Electron apps

Slide deck frameworks supporting Markdown source

Git DMZ Flow

I've been asked a few times over the last few months to put together a full write-up of the Git workflow we use at RichRelevance (and at Precog before), since I have referenced it in passing quite a few times in tweets and in person. The workflow is appreciably different from GitFlow and its derivatives, and thus it brings with it a different set of tradeoffs and optimizations. To that end, it would probably be helpful to go over exactly what workflow benefits I find to be beneficial or even necessary.

Two developers working on independent features must never be blocked by each other
- No code freeze! Ever! For any reason!
A developer must be able to base derivative work on another developer's work, without waiting for any third party
Two developers working on inter-dependent features (or even the same feature) must be able to do so without interference from (or interfering with) any other parties
Developers must be able to work on multiple features simultaneously, or at lea

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

USDA Getting Started

Example NXQL Queries

// returns items that are not restaurants and nf_serving_weight_grams is not null
// includes usda_fields in the results so items that contain those fields will return
// fields.usda_fields
{
  "fields":["item_name","brand_name","keywords","usda_fields"],
  "query":"celery",

	a4b.amazonaws.com
	access-analyzer.amazonaws.com
	account.amazonaws.com
	acm-pca.amazonaws.com
	acm.amazonaws.com
	airflow-env.amazonaws.com
	airflow.amazonaws.com
	alexa-appkit.amazon.com
	alexa-connectedhome.amazon.com
	amazonmq.amazonaws.com

	// all the example arns from this page: http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html
	var arns = [
	'arn:aws:elasticbeanstalk:us-east-1:123456789012:environment/My App/MyEnvironment',
	'arn:aws:iam::123456789012:user/David',
	'arn:aws:rds:eu-west-1:123456789012:db:mysql-db',
	'arn:aws:s3:::my_corporate_bucket/exampleobject.png',
	'arn:aws:artifact:::report-package/Certifications and Attestations/SOC/*',
	'arn:aws:artifact:::report-package/Certifications and Attestations/ISO/*',
	'arn:aws:artifact:::report-package/Certifications and Attestations/PCI/*',
	'arn:aws:autoscaling:us-east-1:123456789012:scalingPolicy:c7a27f55-d35e-4153-b044-8ca9155fc467:autoScalingGroupName/my-test-asg1:policyName/my-scaleout-policy',

	#!/usr/bin/env bash
	#
	# gh-dl-release! It works!
	#
	# This script downloads an asset from latest or specific Github release of a
	# private repo. Feel free to extract more of the variables into command line
	# parameters.
	#
	# PREREQUISITES
	#

	package main

	import (
	"crypto/tls"
	"crypto/x509"
	"log"
	"net/rpc"
	)

	func main() {

	# from http://stackoverflow.com/questions/1057564/pretty-git-branch-graphs
	alias gitlg="git log --graph --all --format=format:'%C(bold blue)%h%C(reset) - %C(bold cyan)%aD%C(reset) %C(bold green)(%ar)%C(reset)%C(bold yellow)%d%C(reset)%n'' %C(white)%s%C(reset) %C(bold white)— %an%C(reset)' --abbrev-commit"