matt on 12 Feb, 2018 06:37 AM
It's not about storing the PDF on disk for future retrieval - that's dirt cheap and I only store the most recent PDFs anyway, rebuilding the others as needed. Rather it's about assembling the PDF in memory.
What sort of size would you be looking for? I could see some minor variations, like allowing for longer/skinnier PDFs that maintain the same ~2000 square inch map area, but I can't provide 8'x8' PDFs without undue impact to the rest of the site. I'm surprised you can even get Avenza to work well on 4'x4' PDFs; I've had issues loading large page sizes inside their app.