Database Index Optimization and Migration Maintenance
#53
Nov 6, 2016free
Adding indexes to your databases can increase the SQL search performance on your tables. As your application grows, migration files can become out of hand, use squasher to squish them down to a single file.
Wouldn't it be awesome if ActiveRecord didn't make you think about eager loading and it just did the "right" thing by default? With Goldiloader it can!
When displaying a count of records, this will generate extra SQL Queries. Learn how to reduce the number of SQL queries called with counter caching the number of associated records.
ActiveJob is a built in wrapper within Rails 4 for your background processors. By adding this layer to your application, swapping background processors is much easier as you will only be affecting a limited number of files.