Find the state that changed

Use app-db when you know which event ran and want to check its writes. The tree shows the selected epoch's state after the event, with changes marked in place.

Run step 5 in the standard-epochs example, select :standard-epochs/increment-flow, and open app-db. Find :base and :derived: the handler increments the first; the flow calculates the second.

← was shows a changed value's previous value. Added and removed entries receive their own diff treatment; a missing key is different from a key whose value became nil or an empty collection. Maps above changes open automatically so the changed paths are visible first.

Zoom into a path

Double-click a map or vector, or press Enter on it, to zoom into that value. The breadcrumb leads back up; Esc zooms out one level. This is useful for a large state tree where you only need one feature's slice.

If the handler returned the right value but the screen is wrong, inspect the subscription and view that consume it in Views.

App state and framework state

Your application keys are in the top app-db card (1). Flow output appears there too, at the flow's declared output path.

The framework keeps machine and routing state in a separate runtime partition. Xray follows with cards for machine instances under :rf/machines and :rf/spawned, then :rf/route, :rf/pending-navigation and :rf/elision when present. These labels organize the inspector; they are not application keys you should write with a handler.

Resource caches have their own Resources panel.

Troubleshooting

Symptom	Cause	Action
The value differs from the running app	You selected an earlier epoch	Compare the selected row with the newest row
State looks valid after a bad write	A schema check may have rejected the candidate	Check the pink row and Epoch's violation block
A sensitive value is a redacted chip	The current local visibility profile redacts it	Read the path and surrounding state, or choose the appropriate local profile
“N redacted paths modified” without a visible diff	Both old and new values display as redacted	Use the path count as evidence of change; redaction cannot display the values
A long value is shortened	Its classification or the display limit elided content	Inspect a smaller path or use the application's own controlled test

The panel is read-only. Dispatch an application event to change state, or use Reset to restore a retained snapshot.