[ximus]

It seems like here "embeddable" means it can be compiled into an app, as opposed to getting accessed through a server. Is that correct?

Yes

whether or not it is a good fit for small CPUs and microcontrollers is another characteristic that I can't comment on.

[hyc_symas]

(since LMDB has been mentioned in this thread... LMDB is embeddable in every sense of the word. It can work with as little as 64KB of memory and is already deployed in a number of MCU-based products. Unfortunately I don't have permission to name names.)

[justin66]

Is LMDB running on any operating systems that do not offer mmap support?

[hyc_symas]

Not currently. That's kind of a fundamental component of LMDB's design.

[justin66]

Thanks. That makes your comment about MCU-based systems that much more intriguing. :)