It is necessary to parse the data from the user's page, according to his wish. If possible, keep the data current throughout the day. The data in this case are the goods that the user sells (the store). Sparsened data will be used for analytics, transformation into other entities, etc. to increase sales conversion and ease of doing business.
As I understand it, there are limitations to the function of page parsing.
Is that moment taken into account that the application works only by agreement of the user and only with his page, and for his benefit? Speech about mass parsing only in the interests of a third-party application is not. Thank!