I think it makes a lot more sense to focus on 1) what differentiates you, which may well involve lots of custom code, and 2) finding a market that works out for you.
For mailinator, they were already popular, so it makes sense to do some one-off coding to make things faster/more efficient. Perhaps, were mailinator starting up today though, using Redis as a good first step would have beaten whatever they had before, and would have been 'good enough' for longer.
Once you've got to the point where you're getting popular, then worry about making stuff scale up.
For mailinator, they were already popular, so it makes sense to do some one-off coding to make things faster/more efficient. Perhaps, were mailinator starting up today though, using Redis as a good first step would have beaten whatever they had before, and would have been 'good enough' for longer.
Once you've got to the point where you're getting popular, then worry about making stuff scale up.