https://m.youtube.com/watch?v=kgDqUHWVw4A
related to blog-post-move-fast-and-fix-things
A three-way join table
talk-easy-rewrites-with-ruby-and-science#technical-conservatism1 at 8:00 github is pretty conservative with new technology. They wanted it to run in MySQL, not some fancy new graph database. talk-easy-rewrites-with-ruby-and-science#technical-conservatism1
dark ship code
instrumentation library
At 21:50 dealing with data quality issues and migrating the data
talk-easy-rewrites-with-ruby-and-science#performance-issue-in-dark-shipped-code1 At 23:30 performance issue in dark shipped code (which is why you only want to use it in a small percentage of the times initially... it's much safer) talk-easy-rewrites-with-ruby-and-science#performance-issue-in-dark-shipped-code1
previous-interface-as-gold-master