We need to dump all our Netsuite transactions, items, entites, some custom record etc to another system. We need to refresh the other system at least once a day. Does anyone have a good approach to do this?

Schedule / MR scriprs Sync once everything then sync the delta for each day. Get the data in the input stage, bulk sync in summarize. Another way could be a scheduled script creating a CSV task, store the CSV available without login, get those CSV from other systems.

thanks for your input! valuable!

I would post events to a topic and then have the other system subscribed to that topic fetch the records using the API. Then your integration is near real time, and you have excellent traceability.