Google Sheets Limits, Quotas and Scale Risk Review
Check whether a sheet is approaching practical limits.
The Open buttons send the prompt text as currently shown below to that site only when you click. Fill in the placeholders first.
[VERIFY] is an editorial flag, not a blank to fill. Wherever the prompt shows [VERIFY], check that item against a reliable source before you use it.
Review scale risk. Size of the sheet (rows, columns, sheets), number of formulas and imports, scripts and triggers, number of editors, and slowness symptoms: [SCALE_DETAILS]. Compare with known limits and quotas for cells, imports and script run time, which I should confirm in current documentation [VERIFY]; be honest about uncertainty over limits. Identify whole-column array formulas, many volatile or import functions, large conditional formatting ranges, and many simultaneous editors. Make a growth table with Sheet, Current rows, Rows added per month, Rows in 12 months, Formulas per row and Risk. Example: 18,000 rows now and 1,500 added a month gives 36,000 in 12 months; at 40 formula cells per row that is 1.44 million formula cells, which may be slow [VERIFY limits]. Warning signs, each with a first action: opening takes over 10 seconds, formulas show loading, edits lag, imports time out, scripts exceed run time, collaborators see delays. Recommend actions in order of cost: archive old rows to a separate file, replace per-row imports with one import, avoid whole-column references, turn volatile functions into static values. Decision rule for moving to a database: over a million rows expected, many simultaneous editors, a need for an audit trail and access control, or integration with other systems [VERIFY]; outline the migration (define tables, export, import, keep the sheet as a view). Return a table with Risk, Evidence, Mitigation and Trigger for moving.
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