Eileen Uchitelle, a Lead Developer at Phishme, gave a very interesting and informative talk at Ruby Nation this past weekend. The talk focused on how problems can arise when developers make the assumption that Active Record knows best instead of understanding how its methods translate into MySQL.

During her presentation Eileen explored an example for each CRUD function and demonstrated how the usage of certain methods could result in MySQL timeouts, memory leaks or slow queries. Read the rest of the blog post.