bcambel

# Add Docker PPA and install latest version
sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 36A1D7869245C8950F966E92D8576A8BA88D21E9
sudo sh -c "echo deb https://get.docker.io/ubuntu docker main > /etc/apt/sources.list.d/docker.list"
sudo apt-get update
sudo apt-get install lxc-docker -y

# Install fig
sudo sh -c "curl -L https://github.com/docker/fig/releases/download/1.0.0/fig-`uname -s`-`uname -m` > /usr/local/bin/fig"
sudo chmod +x /usr/local/bin/fig

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• user signs up with email and password:

  • if the email exists, validation error.
  • if the email is linked to a facebook account, they'll see the "merge?" box when they try to link later
  • if the email doesn't exist, create the account!
    • Username is auto-generated
    • we send a welcome! email
    • we send a verification email

• user decides to link a Facebook account:

• when the user clicks on the "Link Facebook" link in profile, login with javascript SDK

bcambel

Clojure does Objects Better

A hopefully short and concise explanation as to how Clojure deals with Objects. If you already write Clojure, this isn't for you.

You know what an Interface is if you write/read Java or PHP 5+. In Clojure it might be called defprotocol.

user> (defprotocol IABC
        (also-oo [this])
        (another-fn [this x]))

IABC

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Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors

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Hey! I saw this has been indexed by the search engines. It is a first draft of a post I ended up publishing on my blog at: Scaling PostgreSQL With Pgpool and PgBouncer

Thanks for stopping by!

PostgreSQL and Pgpool Architecture

bcambel

Business Models

Advertising

Models	Examples
Display ads	Yahoo!
Search ads	Google

bcambel

(ns queries.postgres
  (:gen-class)
  (:require [cascalog.ops :as c])
  (:use [cascalog.api])
  (:import [com.twitter.maple.jdbc JDBCTap JDBCScheme TableDesc]
           [cascading.tap.SinkMode]))

(defn db-tap [table]
  (let [tap (com.twitter.maple.jdbc.JDBCTap.
      "jdbc:postgresql://my-db-uri?ssl=true&sslfactory=org.postgresql.ssl.NonValidatingFactory"

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(ns wikiparse.core
  (:require [clojure.java.io :as io]
            [clojure.data.xml :as xml]
            [clojure.zip :refer [xml-zip]]
            [clojure.data.zip.xml :refer [xml-> xml1-> text]])
  (:import [ org.apache.commons.compress.compressors.bzip2 BZip2CompressorInputStream])
  (:gen-class :main true))

(defn bz2-reader
  "Returns a streaming Reader for the given compressed BZip2

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(defn chunked-string-seq
  ([^java.io.Reader rdr]
     (chunked-string-seq rdr :chunk-size 16))
  ([^java.io.Reader rdr &{chunk-size :chunk-size}]
     {:pre [(some-> chunk-size pos?)]}
     (let [buf (char-array chunk-size)]
       (letfn [(f []
                 (when (pos? (.read rdr buf))
                   (cons (String. buf) (lazy-seq (f)))))]
         (f)))))

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#! /usr/bin/env python

import redis
import random
import pylibmc
import sys

r = redis.Redis(host = 'localhost', port = 6389)
mc = pylibmc.Client(['localhost:11222'])