- Does this have a log file? If so, what does it log and can it be disabled?
- How is the data stored? (Single file, multiple files, etc.)
- How is the RAM usage?
Shameless plug: If you have write-once (or seldom) and read-often kind of access pattern for JSON documents, I wrote a simple (619 LOC), pure Go key-value store, that supports this use case: microblob. It logs in common format, uses a single file backend and scales up and down with RAM..