andrewvc

 class RetriableRedis
   # Wraps a redis connection, automatically retrying commands
   # if the connection is refused
   # Redis across our AWS instances is stable, but AutoSSH isn't
   # perfect, this works around that for minor blips
   # It'd be great if we consolidate around a single AWS acct. and get
   # rid of SSH, but with EY that isn't easy
 
   attr_accessor :connection
 

andrewvc

tion.rb:724:in `gsub': invalid byte sequence in US-ASCII (ArgumentError)
        from /usr/lib/ruby/site_ruby/1.9.1/rubygems/specification.rb:724:in `to_yaml'
        from /usr/lib/ruby/site_ruby/1.9.1/rubygems/builder.rb:78:in `block (2 levels) in write_package'
        from /usr/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_output.rb:73:in `block (3 levels) in add_gem_contents'
        from /usr/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_writer.rb:83:in `new'
        from /usr/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_output.rb:67:in `block (2 levels) in add_gem_contents'
        from /usr/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_output.rb:65:in `wrap'
        from /usr/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_output.rb:65:in `block in add_gem_contents'
        from /usr/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_writer.rb:113:in `add_file'
        from /usr/lib/ruby/site_ruby/1.9.1/rubygems/package/tar_output.rb:63:in `add_gem_contents'

andrewvc

>  h = Hash.new({}); h[1][1] = 'a'; h[2][2] = 'b'; puts h[1]; h
1a2b
=> {}
irb(main):013:0> h
=> {}
irb(main):014:0> h[1]
=> {1=>"a", 2=>"b"}

andrewvc

(defn ^{:connection (atom nil)}
  redis-exec
  "Executes a redis command with a default connection"
  [command]
  (let [connection (:connection (meta #'redis-exec))]
       (compare-and-set! connection
                         nil
                         (redis-client {:host "localhost"}))
       (@connection command)))

andrewvc

find images -name "*.jpg" | xargs -n1 -IF echo F F | sed -e 's/.jpg$/_thumb.jpg/' | xargs -n2 echo convert -geometry 200x

andrewvc

find images -name "*.jpg" | xargs -n1 -IF echo F F | sed -e 's/.jpg$/_thumb.jpg/' | xargs -n2 echo convert -geometry 200x

andrewvc

    if (addFlagging) {
      flaggings.add(flaggingUserId);
    }  {
      flaggings.remove(flaggingUserId);
    }

andrewvc

task :clockwork => :environment do
  Clockwork.every(10.seconds, "events.update_viewers") {
    Resque.enqueue(ViewerCountWorker)
  }
  Clockwork.run
end

andrewvc

# A typical piece of data
> mixed_data = {"id"=>18929882, "title"=>"Lorem Ipsum", "author"=>"Sit Dolor"}
# JSON stores the data in a reasonable amount of space...
> mixed_data.to_json.length
=> 58 
# But messagepack does much better
> MessagePack.pack(mixed_data).length
=> 44 
# That's a pretty big difference! But its even more efficient with numbers
> numerical_array = [1223, 2190, 1980092, 8932191892, 98321982189]

andrewvc

require 'ffi-rzmq'

CTX = ZMQ::Context.new 1

class ZBufferedStream
  attr_reader :bind_to, :buffer_uri, :ingress
   
  def initialize(name,bind_to)
    @bind_to    = bind_to
    @buffer_uri = "inproc://#{name}"