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Re:Ask HN: Best Framework to build Reddit in 2021? by OmegaPG on Sunday July 04, 2021 @07:50PM (#27733541)
I can use Ruby on Rails but I don't think an RoR app can handle thousands of comments per minute in an optimised way. I run a midsize app in Rails 5 and already having lot of scaling issues.

Iirc Reddit stopped open sourcing their code from 2017 and I guess understanding and running that 12 year old spaghetti code wasn't worth it anyway. I don't see anything useful on their github page too https://github.com/reddit

Re:Ask HN: Best Framework to build Reddit in 2021? by nik736 on Monday July 05, 2021 @01:11AM (#27734810)
Rails will handle "thousands of comments" just fine. If you are hitting scaling issues with a midsize Rails app you probably could look into how to optimize.

Throwing Mongo at the problem is not really a solution.

Re:Ask HN: Best Framework to build Reddit in 2021? by aprdm on Monday July 05, 2021 @01:16AM (#27734826)
GitHub and shopify are written in RoR afaik, many millions of requests go through them just fine
Re:Ask HN: Best Framework to build Reddit in 2021? by Black101 on Sunday July 04, 2021 @10:45PM (#27734247)
Its not like reddit improved since 2017... they added silver, copper and a sucky new interface but I dont think that helps anyone.