Content revision 4e771eaf0390cc87b6c7c6fd8469f3508f6ceeec7119472e6c1ccf17e2e1e5d2

## Remembering what I have already seen

Dealtracker
Source ID dealtracker:the-control-layer
Original https://www.henryw.me/#/dealtracker#the-control-layer

A product can stay on sale across many scheduled checks. Without a record of earlier results, a successful search would keep filling my inbox with the same items. I added a history file so the job could distinguish a new match from one it had already reported. A run with nothing new finishes quietly. Sometimes I want to see the current selection again, including items I previously passed over. The job also checks its inbox for a reset command that clears the saved history. I can restart the shortlist through the same email workflow in which I receive the deals.