A podcast for developers interested in building great software products. Every episode, Adam Wathan is joined by a guest to talk about everything from product design and user experience to unit testing and system administration.
http://fullstackradio.com
episode 104: 104: Jonathan Reinink - Pushing More Work to the Database
Topics include:
- Issues you run into when you do too much work in code instead of in the database
- Why memory usage is just as important as query count
- How being smarter with your database usage can let you avoid hard problems like cache invalidation
- Denormalizing computable data to make it queryable
- Using "where not exists" strategically to improve query performance
- Why the solution to n+1 problems isn't always as simple as eager-loading
- How subqueries work and how you can use them to avoid memory problems when eager-loading
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Links:
- Refactoring UI
- "Dynamic relationships in Laravel using subqueries" on Jonathan's blog
- Source code for Jonathan's Laracon Online talk
- The benefits of NOT EXISTS on StackOverflow
- Advanced Eloquent, Jonathan's Laravel package