[rmatt2000]

A few years ago, I designed an incredibly fast write-only file system, but for some reason couldn't leverage it into a commercial product that anyone was willing to buy.

[gabagool]

http://www.supersimplestorageservice.com/

> The Super Simple Storage Service (S4) is a new innovation in cloud storage. Our advanced write-only storage provides the highest security, lowest cost, and simplest management available.

[notamy]

https://devnull-as-a-service.com/ (:

[osigurdson]

I didn’t dig into the details, but unless DwarfFS is a joke, I assume they mean the system supports create, read and delete operations.

[klyrs]

There's plenty of read-only media out there. I can see this being useful for container deployment -- you've got a database somewhere that you have read/write access to, but the deployed code doesn't need to be updated in the container. A readonly filesystem is a great way to enforce principle of least privilege.

[askvictor]

I'd guess you build a fs image from an existing filesystem, so you'd only have read operations.