Use this as primary mongodb for the application

[pranavburnwal]

Read: https://blog.screenshotbot.io/2024/08/10/building-a-highly-available-web-service-without-a-database/

I was thinking of building in memory Mongo base (maybe with Mongoose).
Mongo already has a 100% in-memory option as stated here: https://www.mongodb.com/docs/manual/core/inmemory/

Was thinking of building a replica set of maybe 3 (or more)
As defined in: https://www.mongodb.com/docs/manual/core/inmemory/#replica-set

What are your thoughts?

[hasezoey]

I dont quite know what answer you are expecting, but let me clarify that despite the name mongodb-memory-server, this library is a downloader & manager of mongodb binaries, which for a long time made use of ephermeralForTest which was a free*1 in-memory engine in mongodb, but it got removed with 7.0.

*1 free as in available in the Community edition.

Additionally, the inMemory engine you linked is for mongodb Enterprise only, this library here manages binaries of the Community edition and has not been tested with the Enterprise version.

An In-Memory storage engine is available in MongoDB Enterprise. Rather than storing documents on-disk, it retains them in-memory for more predictable data latencies.

PS: i only have skimmed the linked blogpost

[pranavburnwal]

Gotcha @hasezoey, thanks for sharing!
Will try to get PoC up for this and see if I can make it work.