Alberto Perdomo albertoperdomo

Backend / Devops Engineer at GrapheneDB

GrapheneDB provides cloud-hosted Neo4j graph databases as a service. We're a growing company and we're looking for a Backend Engineer with a strong systems background.

What You'll Be Doing

Build and maintain the distributed system that hosts thousands of Neo4j databases and supports hundres of customers.
Improve the reliability and efficiency of GrapheneDB core systems.
Monitor, investigate and solve errors in our infrastructure, our distributed system and databases, and collaborate on technical support cases.

Patched ruby 1.9.3-p125 for 30% faster rails boot

What is?

This script installs a patched version of ruby 1.9.3-p125 with patches to make ruby-debug work again (#47) and boot-time performance improvements (#66 and #68), and runtime performance improvements (#83 and #84).

Huge thanks to funny-falcon for the performance patches.

Patched ruby 1.9.3-p0 for 30% faster rails boot

What is?

This script installs a patched version of ruby 1.9.3-p0 with patches to make ruby-debug work again (#47) and boot-time performance improvements (#66 and #68), and runtime performance improvements (#83 and #84).

Huge thanks to funny-falcon for the performance patches.

	$ curl -s localhost:7474/db/data/transaction \
	-H 'X-Forwarded-Host: db-foo.graphenedb.com:80'
	-H 'X-Forwarded-Proto: https'
	-H 'Host: db-foo.graphenedb.com'
	-H 'Content-Type: application/json'
	-d '{"statements":[{"statement":"MATCH n RETURN n","parameters":{},"resultDataContents":["REST"]}]}' \| jq .
	{
	"commit": "https://db-foo.graphenedb.com:80/db/data/transaction/4/commit",
	"results": [
	{

	https://training.kalzumeus.com/newsletters/archive/saas_pricing
	http://insideintercom.io/four-pricing-principals-to-never-forget/
	http://thinktraffic.net/most-common-pricing-mistake
	http://www.extendslogic.com/business/what-i-learned-from-increasing-my-prices/
	http://www.smashingmagazine.com/2011/09/28/youre-pricing-it-wrong-software-pricing-demystified/
	http://neildavidson.com/download/dont-just-roll-the-dice/

	...

	def decorate_resource_or_collection(item_or_items)
	klass = item_or_items.is_a?(Array) ? item_or_items.first.class.to_s : item_or_items.class.to_s
	(klass + "Decorator").constantize.decorate(item_or_items)
	rescue NameError
	item_or_items
	end

	...

	[alberto:~/Code/inmersum → master]$ time rails runner 'p Site'
	Site

	real 0m11.166s
	user 0m9.683s
	sys 0m1.224s

	This is a case study of how we would model parts of the spotify app in MongoDB.

	MODEL
	=====

	users
	-----
	username
	name
	plain_txt_password

	<!DOCTYPE html>
	<html>
	<head>

	<style type="text/css">
	body {width: 100%; height: 100%; margin: 0px; padding: 0px;}
	#layout { background: yellow; display: -webkit-box; -webkit-box-orient: vertical; }
	#main-container { background: red; display: -webkit-box; -webkit-box-flex: 1; }
	#sidebar { background: green; -webkit-box-flex: 0; }
	#map-canvas { background: black; -webkit-box-flex: 1; }