如何在 Blazor WebAssembly-PWA 中运行离线数据库使用？

Question

I have a Blazor WebAssembly ASP.NET Core hosted - PWA application and wanna run it also offline. The database is currently built with SQLite and EF-Core. Is it possible to add offline functionality? I have read about IndexedDB but don't actually know how to implement that into the project (client-side). Or is there any NuGet Package for this support?

The functionality I wann bring into the project is - tracking local changes and fetching them to the DB when its online again.

Answer 1

I've created a library that provides bi-directional offline sync for mobile clients that should do the job: https://github.com/stefffdev/NubeSync

Especially handling conflict resolution when multiple clients did change a record can become tricky, so you could use that as a starting point.

I plan to create a blazor wasm offline sample and blog about it soon.

Answer 2

check This example, uses javascript to store locally in the browser

Answer 3

You can try this package. This is a Blazor library to work with IndexedDB DOM API

https://github.com/amuste/DnetIndexedDb

Answer 4

I'm using event sourcing to solve this problem. It deals well with syncing occasionally connected clients as described here . It means dropping entity framework and probably rearchitecting your entire persitance tech stack, so it is far from ideal. But if you plan on building a large complicated system, this is the way to go.