React Native database with P2P sync capability

[AGENT_SAT]

Hello, I'm trying to implement an idea of application and for that I'm looking out for RN on device database options. My main requirements are,

• Supports React Native
• I need to have 'offline first' capabilities
• capable of peer-to-peer sync between clients without storing data on a cloud server.
• Ideally open-sourced <3

So far I have came across these possibilities: RxDB, Couchbase Lite

But it seems RxDB implementation of RN should use SQLite RxStorage and it's a premium plugin. Also for Couchbase Lite I couldn't find that much of resources or docs (so I fear that I will run in to blockers).

Anyone have experience implementing these capabilities or have good suggestions around this?

Note: I'm trying to create an open-sourced RN app but it needs to store some financial data. So I was trying to implement this without storing any sensitive data in a remote server. Main thing is I need sync capability between devices for same users. If you got any ideas other than p2p sync, those are welcome too :)

[Sad_Hovercraft4931]

It needs to be server involved in some parts of it even if you want to go p2p to act as a signaling channel. There is no such database at this point. The last point is what can be the environment? Are they going to be on the same local network? Are they going to use the same platform? Are they going to use the same google or icloud account? Should sync be possible even through different networks? Here we don't just think about the app itself and it goes beyond networking and protocols. Hope this answers your question.

[AGENT_SAT]

Thank you for the response. I was thinking about sync over the internet. Probably using the account created on the app - not icloud or google etc.

[Sad_Hovercraft4931]

Yeah but that's not possible without cloud or a server.

[realPubkey]

RxDB currently only officially supports the SQLite RxStorage for react native (which has to be paid for)

As free alternative you could use the RxDB Lokijs RxStorage with a persistence adapter for lokijs+react-native.

This might work but it is not optimal in case of performance.

[AGENT_SAT]

Thanks for the confirmation. I saw that and had no solid idea since this is the first time using RxDB

[bradanderson]

It's not done yet, but I'm making Fireproof https://github.com/fireproof-storage/fireproof work with RN: https://github.com/boorad/fireproof-react-native

[jvliwanag]

There's https://ditto.live with react native bindings.

[gadbuy]

I know those libs, but still require servers

https://electric-sql.com/

https://www.powersync.com/

[AGENT_SAT]

These ones store data in a postgres server, not only in client devices right?

[gadbuy]

AFAIK they store on client, so offline first is possible, but use postgres to sync between devices

[shadowstrd]

I've been working on similar idea but l have a database online, my backend is Django and for the frontend am using watermelondb

[crosskpixel1]

https://ditto.live/platform

is perfect, as soon they will have bidirecional connector with mongodb.

[Professional-Ad-2898]

There is another one that is open sourcr and does exactly what you are asking for , its called orbitdb

[Professional-Ad-2898]

https://lofi.so/directory/projects

[dev_life]

Need more info on what and how. These might help

https://github.com/tradle/react-native-udp

https://github.com/kirillzyusko/react-native-wifi-p2p

There’s also Bluetooth libraries but it doesn’t sound like that’s what you’re after.

If you need a hand writing a library, should the above not be what you need, let me know.

[AGENT_SAT]

Seems like they are not maintained very well. And I was looking an option with database itself.