Nate Berkopec • 1/10/2019

3 ActiveRecord Mistakes That Slow Down Rails Apps: Count, Where and Present

This technical article analyzes three specific ActiveRecord methods—count, where, and present?—that Rails developers often misuse, leading to inefficient SQL queries, N+1 problems, and degraded app performance. It provides insights into ActiveRecord's query execution behavior and offers guidelines for optimizing database interactions in Ruby on Rails applications.

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#performance #sql #orm