By Masatoshi Seki
DRuby has been a part of the Ruby typical library for greater than a decade, but few recognize the real strength of the gem. thoroughly written in Ruby, dRuby lets you converse among dispensed Ruby procedures as though there have been no obstacles among strategies. this can be one of many few books that covers dispensed and parallel programming for Ruby builders. The dRuby ebook has been thoroughly up-to-date and elevated from its jap model, with 3 new chapters written by way of Masatoshi-san. you can find out in regards to the layout strategies of the dRuby library, and stroll via step by step educational examples. via development quite a few allotted functions, you are going to grasp allotted programming in addition to complicated Ruby ideas corresponding to multithreading, item references, rubbish assortment, and safeguard. Then you will graduate to complicated ideas for utilizing dRuby with Masatoshi-san's different libraries, corresponding to eRuby and Rinda - the Ruby model of the Linda allotted tuplespace method. within the 3 new chapters, you will see the right way to combine dRuby and eRuby, get an intensive grounding in parallel programming innovations with Rinda, and create an entire textual content seek method utilizing Drip.
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Additional resources for The dRuby Book: Distributed and Parallel Computing with Ruby
DRuby doesn’t have type-in variables, and method searches are done at execution time. Because you don’t need to prepare the list of methods and their inheritance information, you don’t need to write IDL. info report erratum • discuss 22 • Chapter 2. Architectures of Distributed Systems WEBrick Div RWiki Div Ring POSIX Div Dip Windows Mac OS X Figure 11—An example of a system across multiple OSs. Div, Ring, Dip, and RWiki are applications that use dRuby. dRuby’s core mission isn’t about changing the behavior of Ruby, apart from extending Ruby method invocation across networks.
Buzztter consists of multiple subsystems, and it used Rinda (Chapter 6, Coordinating Processes Using Rinda, on page 111) as middleware to consume tweets from Twitter’s REST API. The system used Rinda for two years, eventually replacing it with RabbitMQ4 in 2009. In November 2007, Rinda handled 125,000 tweets (72MB) a day. 1. 2. docid=7846959339830379167 3. 4. info report erratum • discuss 26 • Chapter 2. Architectures of Distributed Systems RWiki RWiki is a wiki system written with dRuby and still actively used in my workplace.
In this chapter, we’ll learn various ways to generate templates using ERB. Let’s look at a sample email first. info report erratum • discuss 32 • Chapter 3. rb class ShippingNotify def initialize @account = '' @customer = '' @items =  end attr_accessor :account, :customer, :items def to_s str = <