ashrithr

Introduction to Kafka

Kafka acts as a kind of write-ahead log (WAL) that records messages to a persistent store (disk) and allows subscribers to read and apply these changes to their own stores in a system appropriate time-frame.

Terminology:

• Producers send messages to brokers
• Consumers read messages from brokers
• Messages are sent to a topic

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

dergachev

OS X Screencast to animated GIF

This gist shows how to create a GIF screencast using only free OS X tools: QuickTime, ffmpeg, and gifsicle.

Instructions

To capture the video (filesize: 19MB), using the free "QuickTime Player" application:

domenic

This article has been given a more permanent home on my blog. Also, since it was first written, the development of the Promises/A+ specification has made the original emphasis on Promises/A seem somewhat outdated.

You're Missing the Point of Promises

Promises are a software abstraction that makes working with asynchronous operations much more pleasant. In the most basic definition, your code will move from continuation-passing style:

getTweetsFor("domenic", function (err, results) {
 // the rest of your code goes here.

devpuppy

FIXME:
WARNING: Nokogiri was built against LibXML version 2.7.3, but has dynamically loaded 2.7.8
or
libxml_ruby.bundle: dlsym(0x10fde1900, Init_libxml_ruby): symbol not found 


gem uninstall nokogiri libxml-ruby

brew update
brew uninstall libxml2

ryanb

Railties 3.1 RC4

• The new rake task assets:clean removes precompiled assets. [fxn]

• Application and plugin generation run bundle install unless --skip-gemfile or --skip-bundle. [fxn]

• Fixed database tasks for jdbc* adapters #jruby [Rashmi Yadav]

• Template generation for jdbcpostgresql #jruby [Vishnu Atrai]

timotta

class HttpCharset
  def initialize(content_type)
    @content_type = content_type
  end
  def encoding
    return nil unless @content_type
    par = @content_type.split(';').select do |c|
      c.split('=').first.strip == 'charset'
    end.first
    return nil unless par

tmm1

require 'rubygems'

# diff --git a/lib/rubygems/version.rb b/lib/rubygems/version.rb
# index 50d8204..4962ce1 100644
# --- a/lib/rubygems/version.rb
# +++ b/lib/rubygems/version.rb
# @@ -295,12 +295,16 @@ class Gem::Version
#      rhsize = other.segments.size
#      limit  = (lhsize > rhsize ? lhsize : rhsize) - 1
#