RubyPlus #31

https://www.rubyplus.com/podcasts/361-Episode-31

• HTTP2 Server
  • Caddy, on Ubuntu 16.04
• 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?
  • Rails Ruby Bench, MRI’s benchmark performance
• 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