swapfile vs zram on tiny boxes

swapfile vs zram on tiny boxes
Classic swapfile on disk saves you from OOM but a swap storm on a slow SSD = site freezes for 30s.
zram makes a compressed RAM disk — swap that's actually fast. On a 1GB box:
— apt install zram-tools
— compresses ~3:1, so 512MB zram ≈ 1.5GB of headroom
Keep a small disk swapfile too as a last-resort backstop. zram first, disk second. Try it tonight.