mrjoshuak

Latency Comparison Numbers
--------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

mrjoshuak

package main

import (
	"container/heap"
	"fmt"
	"math/rand"
	"time"
)

const nRequester = 100

mrjoshuak

Launch CoreOS on AWS GPU instance

• Go to Launch CoreOS on AWS and find the HVM AMI you want to use, eg: ami-d878c3b0

• Go to AWS control panel under EC2 instances

• Launch a new instance

• Under "Community AMIs", search for ami-d878c3b0

mrjoshuak

function myFunction(opts) {
  var defaults = {
    param1: 'foo',
    param2: 'bar'
  };
  var options = __extend(defaults, opts);
  return options;
}

myFunction({param2: 'baz'}); // { param1: 'foo', param2: 'baz' }

mrjoshuak

Rails Models

Generating models

$ rails g model User

Associations

belongs_to

has_one

mrjoshuak

Welcome!

If you have any suggestions, please leave a comment and mention me ( @dideler ) so I get a notification.
Pull requests aren't possible with gists (yet), so comments are more useful than forking this to make changes.

Don't forget to star this gist!

TODO

• Organize resources into sections
• More detailed sections (perhaps sections & subsections)