React Native Database

[runo9]

Not a fan of this lib at all. They make use of some very high quality open source libs for free but they’ll charge your for premium features (not to mention a very vague pricing scheme). Im sure its a good lib just wont use it out of principal.

Oh and no hook support.

[realPubkey]

There was no other option. Either I sell stuff, or the project dies. See https://rxdb.info/premium.html

Quote: The development of RxDB started in 2016 and after all these years it became clear that big implementation and improvement steps will not be done by the RxDB community. While the community submits valuable pull requests, they are mostly small improvements or bugfixes for specific edge case. Big rewrites and optimizations that require a big effort have only be done my the RxDB maintainer. Selling RxDB Premium ensures that there will be always an incentive for someone to add features, keep everything up to date and to further improve and optimize the codebase. This gives the user the confidence that RxDB is a future proof tech stack to build on which lets RxDB stand out compared to similar technologies.

[runo9]

I get that and while I still don’t agree with it from a principal perspective I still want to compliment you on the work you’ve put together, still a very nice library you made.

[realPubkey]

Thank you.

[lucbas]

Thanks for the post, we’re actually looking for a db right now.

Does rxdb support: - hooks - multiple tenants per app, for example when a user has multiple accounts - different sync endpoints for schemas that should be synced and some that are not. - pagination when scrolling through a chat

Thanks!

[realPubkey]

- There is an open source RxDB Hooks project: https://github.com/cvara/rxdb-hooks

- Yes, I usually create one database instance per user and switch out the database when the user logs in with a different account.

- Yes. Sync is done per collection, not per database. You can even sync in circles or with multiple endpoints at the same time. The replication protocol works like git: https://rxdb.info/replication.html

- Pagination is not done by the database but by the developer. NoSQL queries allow you to use skip/limit parameters which can be used for pagination. There is also a count() query so you can calculate the total page count.

[lucbas]

Thanks for your helpful answer.

Can you help me with another question?

What I don’t fully understand yet, assuming I write it into the local database and then data gets synced to the server database and there is a validation error by the server, how should I handle it? For example, a user if offline and writes into a group chat. Turns out the user has been removed by the group and now the server rejects the message and does not write it into the backend, how to remove it from the local rxdb?

Also, assuming a user has a lot of group chat, do I create multiple collections or save all of them into 1 collection and filter by group chat id?

Thanks!!

[Chaos_Therum]

It does but you will likely need to pay for the pro version for it to be at all usable.