October 2008
Intermediate to advanced
352 pages
10h 30m
English
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Exercises
Recast a complicated ActiveRecord query as a simpler query on a view-backed model. Now select the same information out of both, recording the time before and after. Repeat multiple times with each to eliminate the impact of disk and database caches. How does performance compare?
Using the same complex query and view from above, compare the database plans for each. In postgres, you can get a query plan with the command
explain planquery.Write a custom ActiveRecord extension plugin,
backed_by_view, that when specified, disables functions that would attempt to write to the view.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.