Suggestion: swissbit sd cards https://www.swissbit.com/products/nand-flash-products/micros...

I live in Norway and can recommend digikey or mouser for sensible price and shipping cost. Both suppliers are exceptionally professional, minimum order quantities of 1. https://www.digikey.com/ https://mouser.com/ I have experience with swissbit products, but not the sd cards.

Edit: A different trick is to run the bootloader on the sd card as usual, but the OS itself can be elsewhere, usb hdd, maybe network share.

I have a Pi running Pi-hole, Home Assistant, Node Red, and some custom scripts. It uses a parts bin 2.5" laptop hard drive (via a USB to SATA cable) as the sole boot and storage medium. You can set most Pis to boot from USB and totally avoid touching SD cards.

It was easy to configure and sped up the Pi quite a bit. No reliability issues in about a year of use.

Boot from USB instructions are at https://www.raspberrypi.org/documentation/hardware/raspberry....

i don’t know what your app is doing but what I’ve done in the past is to boot from the sd card and switch it to read only after and use an in-memory tmpfs after. I’ve hacked this together quite a few times that at some point I’ve put together a little project. maybe check it out: cattlepi.com

Look for as cards that are certified for dash cams. Either that, or make the write intensive volume a network share.