Lessons
1One user action crosses several versions of reality60 min read
Trace browser draft, server state, and an in-flight request without mixing them.
- →Assign state to its authoritative owner
- →Distinguish render snapshots from later events
2Optimistic interfaces need a reconciliation rule60 min read
Handle two optimistic changes and one failed response without erasing valid work.
- →Reconcile optimistic updates with authoritative results
3A server-rendered component is still a data boundary60 min read
Review a data path for server authorization, client exposure, and cache identity.
- →Enforce authorization at the server boundary
- →Keep private data out of shared caches and client payloads
4Make form failures usable without a mouse60 min read
Specify validation, pending, error, and success behavior for an accessible save flow.
- →Design recoverable and accessible form states
Skills in this course
- 01Assign state to its authoritative ownerAssign state to its authoritative owner.
- 02Distinguish render snapshots from later eventsDistinguish render snapshots from later events.
- 03Reconcile optimistic updates with authoritative resultsReconcile optimistic updates with authoritative results.
- 04Enforce authorization at the server boundaryEnforce authorization at the server boundary.
- 05Keep private data out of shared caches and client payloadsKeep private data out of shared caches and client payloads.
- 06Design recoverable and accessible form statesDesign recoverable and accessible form states.