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0 pointsiamwil2y ago0 comments

Generally No. But it can be easy to write bad queries using ActiveRecord ORM if you're not aware of N + 1 problems.

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100%, it makes it easy for bad programmers to write bad performing queries, but you can easily write performant code. Btw that’s a feature - letting people ramp up to full db knowledge is beneficial, you don’t want to be spending your time writing performant queries before you need to.

topspin2y ago

> it makes it easy for bad programmers to write bad performing queries

That is true of every ORM in existence. The easiest thing to do is naively follow the object graph in code, because that's what the ORM gives you. If the ORM was to somehow add friction here to encourage some other approach it would be panned as "too hard!!1" and fade away into obscurity.

romafirst32y ago

that is what I meant by saying it's a feature. It's easy to get started and do 99% of the stuff. When you are lucky enough to hit performance problems it's easy (for someone with knowledge) to fix your performance problems within the structure of Rails. It's awesome.

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romafirst32y ago

topspin2y ago

> it makes it easy for bad programmers to write bad performing queries

romafirst32y ago

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