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Just imagine the gargantuan changes that could be necessary for small tweaks like that. Twitter was built on RoR originally, so it was probably a pretty standar

Just imagine the gargantuan changes that could be necessary for small tweaks like that. Twitter was built on RoR originally, so it was probably a pretty standard relational model, then they did massive scaling for huge read/write loads, then they did massive scaling for real time features, god knows how hard it would be just to add a foreign key. I really, really, want to take a day and just go through all their engineering blogs after only glimpsing a few..

teej 10y ago
Honestly, if they only designed to scale and did not anticipate iterating on the product, they deserve to fail. My guess is that this not a trivial change but worth the effort.
- toomuchtodo 10y ago
  No one deserves to fail because of challenges they couldn't have anticipated in the future. We call that "learning".