Comment by ThePhysicist

If you're interested in using Bloom filters in the backend, we (at DCSO) have written efficient and interoperable open-source implementations in Python and Go, also using FNV-1 hashing:

https://github.com/DCSO/bloom (Go version)

https://github.com/DCSO/flor (Python version)

The Go version comes with a command line tool that allows you to use Bloom filters on the shell.