NoSQL Joins, or, So You're Writing an RDBMS | Hacker News Reader

NoSQL Joins, or, So You're Writing an RDBMS

allbuttonspressed.com

27 pointsibejoeb9 comments

Could the title please be changed to something that makes more sense? This is not an attempt at re-creating an RDBMS. It's about providing an automated and abstract mechanism for denormalization. When writing scalable systems you most likely won't get around denormalizing at least parts of your data. The problem with denormalization is that is requires lots of additional code and it puts lots of inconvenient dependencies in your code, making clean code separation difficult or impossible. The dbindexer is our attempt at solving this problem.

Dbindexer looks quite interesting, and I can't wait to play around with it a bit.

But I'd just like to say I love you guys at ABP. Django-mediagenerator is an absolute must-have for anyone developing a site in Django, I don't know how I lived without it.

Thanks a lot for the kind words. :)

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Agreed. This title is quite obviously biased. I don't see a reason not to use the linked content's title as the title for submission.

Yeah, no disrespect. I use your stuff. Cheers.

Actually, I can't edit it. Luckily it's getting more visibility than what I typically post, if that's consolation. You're well liked.

At first I thought that you wanted to misrepresent the article, but that doesn't seem to be the case, so no offense taken. Thanks for posting the link here. It's nice when other people find our work worth mentioning.

Adding joins to a NoSQL-based codebase is no worse than de-normalizing data if you're using an RDBMS.

"Denormalization, or So You're Writing a NoSQL Store"

Am I the only one who thinks that the NoSQL movement -- whatever else its aims may be or have been in the past -- is ending up doing A LOT of wheel reinvention? (With little demonstrated gain.)

I'm really open to being made aware that I don't get it. I WANT to get it, in fact. I like the idea of NoSQL in principle, and I understand at least some of the motivations behind a non-relational store. I just don't see many of those ideological benefits translating into practical ones. When you're talking about doing joins and 'primary_key in (X, Y, Z)' types of queries, that looks to me exactly like a relational database.

Do I just not get it?

I think a lot of it has to do with scaling up to multi-server clusters where relational properties and ACID guarantees cease to work properly. For small datasets I don't see any benefits over RDBMS.

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