LabsLab 05 · Intermediate · 25 min
SQLite notebook
Persist learner-owned notes using EF Core, migrations, and optimistic concurrency.
In this Blazor WebAssembly host: notes are stored in this browser's localStorage instead of SQLite. Versions still detect conflicting edits from two tabs.
Notes are kept in this browser's localStorage (the server host uses SQLite). Demo persona changes do not change your workspace. A workspace holds at most 50 notes.
Loading notes…
Why it works
Each operation creates a short-lived DbContext. A protected workspace cookie scopes queries. A version token detects edits from an older snapshot.
Try it yourself
Create a note, open this lab in a second tab, and edit the same note in both. Save one, then the other. Reload after the conflict.