Create a BLOB database on top of it about small

[kostja]

Sure, you can do it, but why not store this stuff in Tarantool in the first place? You can use https://github.com/tarantool/nginx_upstream_module to serve them as files via nginx.

[olegabr]

First, tarantool is in-memory database. I'm thinking about terabytes and petabytes of images.
Second, sendfile promises to be very fast because of kernel-level optimizations, primarily, avoid file data copying. Not sure if it can be achieved with the module you have mentioned.