One approach that I like is to think about scaling in terms of epochs. Each epoch of your system should handle maybe 3 orders of magnitude (let's say users, epo

One approach that I like is to think about scaling in terms of epochs. Each epoch of your system should handle maybe 3 orders of magnitude (let's say users, epoch 1 is 1k - 100k, epoch 2 is 100k - 10m, etc — epoch 0 was your MVP/PoC) When you implement each epoch, do a paper design for the next epoch, this helps you think about how you will get there, and can prevent you from writing yourself into a corner, without over indexing on scaling issues that you don't have yet