I didn’t say it was a great approach, but if you used the timestamp as part of the PK and treated every record as immutable (any update resulted in a new row), it would work.
I’m not actually a fan of this approach as I think it causes too many scaling issues. If I were to do this, I’d either keep a database cursor in my session or store the full List of PKs in my session for the current query. This way you’d have the order of results as they existed at the time or the query. You still have to deal with the UPDATE/DELETE issue, but o guess this just depends on how much you care about consistent query pagination.
I’m not that much of a stickler and most datasets don’t change fast enough to make it an issue.
