A page can load quickly while showing an old price. Test catalogue freshness separately from loading speed. START WITH A SCENARIO Create a domain with controlled data in a test environment. Open the catalogue, detail page and search results. Change availability and repeat the visit in a normal tab, a private window and after using the browser's back button. Record exactly where the old value remains. Do not change real prices for this exercise. DISTINGUISH THE RULES MDN explains that no-cache permits storage but requires validation before reuse; no-store prohibits storage. They serve different purposes. Choose a policy for the data rather than copying one header across the entire website. NAME THE DATA OWNER Sketch the short path: database, server, intermediary cache, browser. Beside each layer, name its maintainer and the team's way of checking changes. Review the customer account separately: one person's data must not appear in another person's response. Use only your own test accounts for this check. TEST THE PURCHASE BOUNDARY The catalogue supports discovery, but the server should check the current price and availability again before checkout. If the domain is unavailable, the buyer needs a clear message rather than contradictory buttons. Include a status change between browsing and submitting a request in release acceptance. Save the findings with a date and an owner. When exploring the catalogue, open the full page of each shortlisted domain: a listing starts the selection process, while final terms should be checked before payment. Image: a new AI photoillustration for this article; a conceptual scene, not a documentary photograph. Domain catalogue: https://domainevery.com/en/domains Primary sources: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Cache-Control https://www.rfc-editor.org/rfc/rfc9111
