Time-Based Formula Fields Never Auto Update

[dkindlund]

Describe the bug
When creating a formula field in a table that uses a timestamp, it seems the formula value is only every computed once during the life of the record. For certain time-based formulas, it makes sense for the formula to be re-computed at a set frequency (e.g., every 5-15 minutes).

To Reproduce
Steps to reproduce the behavior:

1. Create a table in a new base
2. Create a timestamp field named Published At
3. Create a sample record with a valid Published At value
4. Create a new formula field named Age where the formula as:

TONOW({Published At}, "day") & " days ago"

5. See that the Age field is accurate for now.
6. Wait 2 days.
7. Refresh the view.
8. See that the Age field value was never recomputed -- it still shows a stale computation.
9. The only way to force recomputation is to either: (a) adjust the Published At timestamp manually OR (b) adjust the Age formula manually.

Expected behavior
When creating a new formula, I would like Teable to offer an option to auto recompute the formula value on a set CRON schedule (e.g., every 5 minutes, every 15 minutes, ...). That would give the table designer maximum flexibility about how often these formulas recomputed. If that is too difficult to do on a field-by-field basis, then at least allow the designer to specify a table-wide recompute CRON schedule that could apply equally to all formulas within a table.

Client (please complete the following information):

• OS: Linux
• Browser: Chrome

Platform (Please tell us which deployment version you are using)
[docker-standalone]

Additional context
Teable is deployed as a Google Cloud Run service with autoscaling enabled.