how difficult it is?

how difficult it is to program a chan board?
difficult?

Anyone can do it. This is evidenced by 4chan running a Futallaby fuckup that is apparently so resource-intensive (an imageboard? come on, the only thing that should be an issue is bandwidth) that they can't even use transactions, much less employ more advanced filters to stop non-/b/ boards from getting spammed.

I am wondering if anyone has ever been vand for the concurrency issue where your image upload gets juxtaposed with someone else's.