NDB cluster read path and write path (no replies)

Hi Everyone,

I'm struggling to understand NDB read and write paths. But cannot find any description. Is there a diagram explaining the matter?

More specifically, I'm interested in building the following MySQL configuration:
1) Master-master replication
2) All the data stored on-disk
3) But acknowledged in-memory

I.e. all the incoming data should be written to disk, but asynchronously. The data should be acknowledged as soon as it's copied into memory of both masters (but before it touches the disk).

Is it possible to build such a configuration using NDB?

Thanks!