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RubyPlus #31


  • HTTP2 Server
  • RailsPanel: A Chrome Extension for Rails Development
    • tailing of development.log
    • db/rendering/total times, parameter list, rendered views and more
  • Background jobs and deploys
    • indempotent
    • Always prefer many smaller jobs to one large job
  • What About Warmup?
  • Deploying a Rails Application to Elastic Beanstalk
    • Elastic Beanstalk in a Virtual Private Cloud (VPC) on Amazon AWS
  • Faster Rails: Is Your Database Properly Indexed?
    • double index (polymorphic)
    • Any frequently used sorting can be improved by using a dedicated index
  • A Starter Guide to Ruby Backend Performance
    • bullet, rack-mini-profiler
    • derailed_benchmarks
  • Polyfill: Use Newer Ruby Features on Older Versions
    • The polyfills are built using refinements so there is no monkey patching
  • Don’t Use Objects as Hash Keys in Ruby
    • 313% slower than it would with a Symbol type object
  • The hidden cost of the invisible queries in Rails
    • if Actor.limit(1).count == 0
    • exists? method is good
  • CuckooFilter
    • a probabilistic datastructure which is objectively better than Bloom Filters for set-membership queries