Yes, it's like Neo4j but based on the in-memory database LMDB, presumably to pro... | Hacker News

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		antonvs on June 18, 2018 \| parent \| context \| favorite \| on: LemonGraph – A log-based transactional graph Yes, it's like Neo4j but based on the in-memory database LMDB, presumably to provide high performance running on a single machine. The link mentions that its use case is streaming seed set expansion, which allows you to identify communities based on a set of seeds. I wrote more about that in this comment: https://news.ycombinator.com/item?id=17335873

hyc_symas on June 18, 2018 [–]

Quibble: LMDB is a memory-mapped file database. It is not an in-memory database, although it generally outperforms all other in-memory databases.

antonvs on June 22, 2018 | [–]

Thanks, this is the first I had heard of LMDB.

I actually love the idea of a memory-mapped database, I've often thought memory mapping isn't taken advantage of enough.

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