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| | | Issue 258 — August 6, 2015 | 
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Heroku
 
Richard Schneeman writes about how Heroku set about producing a patch  for Rails that improved response time by more than 10%.
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Juanito Fatas
 
If squeezing out each drop of performance from your Ruby code is key, these benchmarks, comparisons, and examples could prove useful, and you can submit your own entries for inclusion too.
 
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Ilija Eftimov
 
It’s natural to test your code for the positive, expected outcomes, but testing that your code returns exceptions in the way users will expect is a wise idea too.
 
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Philippe Creux
 
A look at the benefits of using data objects and how to use to Virtus to turn a complex data structure of nested hashes and arrays into such objects.
 
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Jamis Buck
 
Using a not commonly seen Ruby operator.
 
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Bozhidar Batsov
 
A slidedeck that doesn’t entirely work on its own but will provide a narrative for those interested in the concepts.
 
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 Jobs  
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 In brief 
Introducing Sidekiq Enterprise news Mike Perham wants to support enterprise users of his popular background job processor with a few new features.
 Mike Perham
RubyConf Portugal 2015 (September 14-15, Braga) news And they’ve given Ruby Weekly readers 10% off here.
 RubyConf Portugal
Ruby Object Mapper's (ROM) Sustainable Development Campaign news Ways you can support ROM to help it grow faster.
 Piotr Solnica
Test Doubles: in Theory, in Minitest and in RSpec tutorial Ilija Eftimov
How Rails' Fancy Exception Page Works tutorial Starr Horne
Safely Storing Your Assets: Paperclip With AWS + Heroku tutorial Vaidehi Joshi
How to Raise Any Object As A Ruby Exception tutorial Starr Horne
Writing a Mumble Bot in Ruby tutorial DevDungeon
Moving Parse's API From Ruby to Go, The Video video Parse’s article on moving their API from Ruby to Go was very popular recently, now the 20 minute video of the talk behind it has been released.
 Parse
Benchmarking Exceptions in Ruby - Yep, They're Slow opinion Not really news, but it’s good to have some numbers.
 Starr Horne
Beautiful website monitoring, simple and inexpensive tools A modern HTTP(S) monitoring service, where you only pay for what you use. Written in Ruby 3
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mruby-cli: Easily Set Up A CLI with mruby That Compiles Binaries tools A utility for setting up a CLI with mruby that compiles binaries for Linux, OS X, and Windows.
 Terence Lee
TestChanges: Test Only Files That Have Changed Since A Given Commit tools code Like guard, you configure the files you want to watch and the tests they run. Unlike guard, you have to run TestChanges manually. This is great for running slow tests like acceptance tests.
 George Mendoza
comp: Add Function Composition to Procs and Methods code Paul Mucur
Rstreamor: Stream Your Files using HTTP 1.1 Range Request Headers code Erwin Schens
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