Posts Tagged "Databases"
Last updated 10 August 2016
Locking is one of the most powerful tools in a developers chest to ensure data consistency, but it the documentation can be confusing. Peter guides you through how to use it properly with examples.
Last updated 20 July 2016
When moving from toy apps with fake data to production apps with real data that can't be lost, it can be hard to know how to adjust your database schema. Peter explains a few simple steps to make it happen seamlessly.
Last updated 29 June 2016
So much of programming is learning the jargon programmers use. Learn what an N+1 query is, how to identify them in your code, and how to avoid generating them.
Last updated 12 February 2015
How to find the greatest item in a group in ActiveRecord and Rails
Last updated 18 October 2014
A guide to a very complicated ActiveRecord query from a Rails app