Keenan Brock kbrock

Career Plan

Target: Senior Backend/Infrastructure Engineer

Ruby + Go + AWS + Postgres

Goal 1: Solutions Architect Associate

Architecture cert — "which services solve this problem." No code, multiple choice.

2 renderings of a vmware dc folder hierarchy

Full diagram

[](https://mermaid-js.github.io/mermaid-live-editor/#/edit/eyJjb2RlIjoiZmxvd2NoYXJ0IExSXG5cbmRmW1wiREMgRiAoWSlcIl1cbmRjW1wiREMgKFkpXCJdXG5oZltcIkggRiAoWSlcIl1cbnZmW1wiVm0gRiAoQilcIl1cbmNbXCJDbHVzdGVyXCJdXG5oW1wiSG9zdFwiXVxudm0oXCJWbVwiKVxuc

The [original] is modified in the following ways:

tweaked options to be {} not [] for json syntax reasons
added "R" for demonstrative purposes

Here are a few ideas. I tried to keep them as independent as possible:

assume width, height, matrix, and display
remove replaces ~~4. condense options~~ want to keep nodes separate.
assume, replaces, condense

method	nil	speed	str	speed
`?split:[]`	9,761,148.9 i/s		2,869,972.9 i/s	3.40x
`&.split\|\|[]`	9,271,343.0 i/s	same	2,879,248.1 i/s	3.39x
`&&split\|\|[]`	9,096,687.7 i/s	same	2,941,303.8 i/s	3.32x
`to_s.split`	4,288,858.0 i/s	2.28x	2,822,293.7 i/s	3.46x

ruby -v

ruby 2.4.2p198 (2017-09-14 revision 59899) [x86_64-darwin16]

	nil	slower	empty	slower	full	slower
`x&.empty?`	11985357.7 i/s	same	11617138.6 i/s	same	11247144.5 i/s	same
`x.blank?`	9909235.8 i/s	1.21x	10488507.9 i/s	1.14x	10418916.8 i/s	1.15x
`x.nil? \|\| x.empty?`	10194622.1 i/s	1.18x	9584369.0 i/s	1.25x	9667811.7 i/s	1.24x
`x.try!(:empty?)`	5437472.5 i/s	2.20x	3493090.9 i/s	3.43x	3523153.2 i/s	3.40x

note: in the tests, we are setting a different variable @x than the guard clause @x2. I tested a terciary ?: vs the guard clause return if defined?() and they were about the same for pass and fail case

test	int i/s	slower	text i/s	slower
eq2	6,315,053.7 i/s	same	6,323,409.7 i/s	base
neq2	6,281,137.2 i/s	same	3,707,761.0 i/s	1.71x
eq	5,978,924.2 i/s	same	4,572,438.8 i/s	1.38x
include	4,368,299.8 i/s	1.45x	4,349,531.4 i/s	1.45x
neq	4,194,756.5 i/s	1.51x	4,170,358.7 i/s	1.52x

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8" />
	<title>All Out Of</title>

	<style>
	/* ---------- Page setup ---------- */
	html, body {
	margin: 0;


	relationships = Relationship.where(relationship: 'genealogy', resource_type: 'VmOrTemplate').select(:id, :resource_id, :ancestry).to_a
	rel_by_rel_id = relationships.index_by(:id) # relationship => resource_id
	rel_by_vm_id = relationships.index_by(:resource_id) # resource_id => ancestry

	Vm.where(:id => Relationship.select(:resource_id)).each_in_batches do \|vm\|
	ancestry = rel_by_vm_id[vm.id].ancestry.split("/").map { \|rel_id\| rel_by_rel_id[rel_id].resource_id.to_s }.join("/")
	vm.update_attribute(:ancestry => ancestry)
	end

	#!/usr/bin/env ruby

	require "benchmark/ips"
	require "date"

	BEGIN_OF_JULY = Date.new(2015, 7, 1)
	END_OF_JULY = Date.new(2015, 7, 31)
	DAY_IN_JULY = Date.new(2015, 7, 15)
	RANGE = BEGIN_OF_JULY..END_OF_JULY