How to make a multi-thread application with Node.js, accessing a LevelDB?

Question

There is this in LevelUP Documentation (https://github.com/rvagg/node-levelup#multi-process-access):

LevelDB is thread-safe but is not suitable for accessing with multiple processes. You should only ever have a LevelDB database open from a single Node.js process. Node.js clusters are made up of multiple processes so a LevelUP instance cannot be shared between them either.

So I could not use Node Cluster (http://nodejs.org/api/cluster.html)

Is there another option to make a multi-process (or multi-thread) Node.js Application accessing a LevelDB Database?

Have you tried `multilevel`? – hellboy Oct 10 '14 at 19:52 — hellboy, Oct 10 '14 at 19:52

score 4 · Accepted Answer · answered Dec 20 '14 at 16:22

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I'd say level-party is what you're looking for. Of course in terms of having multiple leveldb's for each child thread i'm not sure if know the answer to that.

answered Dec 20 '14 at 16:22

latrasis

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level-party worked great and seamlessly – Miguel Mota Mar 08 '22 at 18:01

score 0 · Answer 2 · answered Jan 28 '14 at 14:56

I think your only viable option would be to elect a single process to own the leveldb access and do all operations and communicate with that process via the network. Or you could just do what the rest of us do and use a traditional database server that can be accessed by multiple client processes simultaneously.

How to make a multi-thread application with Node.js, accessing a LevelDB?

2 Answers2