mathieue

# install chef-solo  one line !
curl -L https://www.opscode.com/chef/install.sh | bash

# cookbooks have their rep: check the dir name == cookbook name
mkdir -p /opt/cookbooks
git clone https://github.com/hw-cookbooks/graphite
git clone https://github.com/opscode-cookbooks/apache2.git
git clone https://github.com/opscode-cookbooks/python.git
git clone https://github.com/opscode-cookbooks/runit.git
git clone https://github.com/opscode-cookbooks/memcached.git

rantav

Update: Meetup had revived the group and are welcoming us back again. At the end, no data was lost, even though interim communications suggested it was.
We are happy that things had finally taken a positive turn and are happy to stay at meetup and grow our community to our next event and next next event. We are a little bit sorry that things went soar for awhile but what's important is that at the end both us and meetup had learned how to make things better for the next time.

Original post below....

Meetup, you've been bad, bad hosts!

TL;DR: Meetup had deleted my group, for what I beleive to be their mistake, yet they did not admit the mistake nor can they restore the data. I am deeply dissapointed from meetup and I've lost my trust in them.

rantav

When using newrelic in java, it isn't obvious how to mavenize things. Newrelic has two java jars: newrelic.jar and newrelic-api.jar. There's also another newrelic.yaml of course. For development you need the api.jar in your classpath. In production you want the api jar in the classpath, but also newrelic.jar as an agent. Newrelic have a good explanation about how to set up newrelic.jar as an agent but they don't have anything regarding how to develop and get the api jar in place using maven, so here goes...

Add the repository:

<repositories>
  <repository>
    <id>newrelic</id>

newrelic

matschaffer

require 'rubygems'
require 'chef/encrypted_data_bag_item'

secret = Chef::EncryptedDataBagItem.load_secret('data_bag_key')
data = {"id" => "mysql", "root" => "some secret password"}
encrypted_data = Chef::EncryptedDataBagItem.encrypt_data_bag_item(data, secret)

FileUtils.mkpath('data_bags/passwords')
File.open('data_bags/passwords/mysql.json', 'w') do |f|
  f.print encrypted_data.to_json

jboner

Latency Comparison Numbers (~2012)
----------------------------------
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

dhh

class PostsController < ActionController::Base
  def create
    Post.create(post_params)
  end
  
  def update
    Post.find(params[:id]).update_attributes!(post_params)
  end

  private

tsabat

Prereq:

apt-get install zsh
apt-get install git-core

Getting zsh to work in ubuntu is weird, since sh does not understand the source command. So, you do this to install zsh

wget https://github.com/robbyrussell/oh-my-zsh/raw/master/tools/install.sh -O - | zsh

mgpb

# It looks like this but with color and stuff:
# (macbot • sample_app ┣master ∆68m)$
# (macbot • autumn ┣master ∆2yr8mo)$


function relative_time_since_last_commit {
    last_commit=`git log --pretty=format:'%ar' -1`
    echo ${last_commit}
}