CraftQuest on Call: Benchmarking, URL segments, default dates

In this edition of the CraftQuest livestream, Ryan and Andrew answer listener and StackExchange questions about Craft CMS.

Craft CMS

Some stuff to help you along during the lesson:

What do you benchmark before launching a site?
How do I check which version of Craft I'm running?
Getting URL segments for multi-site.
How do I automatically set a date field to a default date?
How do I find out why mail settings are failing?
How do display JSON on a page without importing the content?