bbeck

#!/bin/bash

#
# Jenkins Swarm Client
#
# chkconfig: 2345 89 9
# description: jenkins-swarm-client

source /etc/rc.d/init.d/functions

bokmann

# Thee will be more information here when I share the entire problem space I'm working on, but
# in short, this is preview material for my second talk in a series called "What Computer Scientists Know".
# The first talk is on recursion, and goes through several examples., leading up to a problem based
# on a simple puzzle that initial estimates based on performance of a previous puzzle would take years
# to solve on modern computers with the techniques shown in Ruby. That sets the stage for improving the
# performance of that problem with threading, concurrency, and related tuning.
#
# The second talk is on threading and concurrency, touching on algorithmic performance as well.
# Using some knowledge of the problem (board symmetry, illegal moves, etc), we reduce the problem space
# to about .5% of what we initially thought it was.  Still, the initial single threaded solution took more

miketheman

# S3 translates a '+' in filenames to %2B in the URL, breaking apt
# Here we will traverse any file in the pool/ dir and create a hardlink for
# any file that has a plus in its name. apt/wget will do the right thing.
Dir.chdir('<%= @repo_root %>') do
  plusfiles = Dir.glob '**/*/*+*.deb'
  begin
    plusfiles.each do |file|
      File.link(file, file.gsub('+', ' '))
    end
  rescue SystemCallError # swallow this if file already exists

itsderek23

# docker build -t="rails" .

FROM ubuntu:12.04

RUN apt-get update

## MYSQL
RUN apt-get install -y -q mysql-client libmysqlclient-dev

## RUBY

aphyr

In this ZK demo, a partition places the primary on the minority component. All
operations time out while the cluster converges on a new primary, at which
point three clients (talking to the three nodes in the majority component) can
proceed again. When the partition is healed, the two minority nodes can begin
accepting writes again. As with single-node Postgres, Zookeeper's client
protocol and ZAB both allow for false negatives (timeouts may actually succeed)
but not false positives (every successful write *will* be present in the final
set.)

HOW TO READ THIS CHART:

ragnard

FQDNLookup true
Hostname "localhost"
Interval 5

LoadPlugin syslog

<Plugin syslog>
  LogLevel info
</Plugin>

krishnanraman

/*
Goal: Use Scalding to datamine the 2010 US Census data (kindly provided by @ElonAzoulay & @hmason), to find
Where do the WEALTHY WELL EDUCATED ELITE live ?
WEALTHY == house value quarter million, household income 150k
WELL EDUCATED == sort by edu, edu = (10 * Phd + 5 * MS + 1 * BS) score
*/
import com.twitter.scalding._
import cascading.tuple.Fields
import cascading.tap.SinkMode

ngocphamm

Backend Architectures

Twitter

ror, scala, jetty, erlang, thrift, mongrel, comet server, my-sql, memchached, varnish, kestrel(mq), starling, gizzard, cassandra, hadoop, vertica, munin, nagios, awstats

• Scaling Twitter: Making Twitter 10000 Percent Faster
• Scaling Twitter
• Blaine Cook on Scaling Twitter - YouTube

fedesilva

implicit class In[T](t:T) {
    def in(opts:T*): Boolean = opts contains t
}
  
scala> 1 in ( 2, 3 )
res1: Boolean = false

scala> 1 in ( 2, 3, 2, 1 )
res2: Boolean = true

matschaffer

jar 'com.netflix.hystrix:hystrix-core', '~>1.2.16'