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"Make your store GPSR compliant" does not tell you what to actually put on the page. Here is the concrete list of data the regulation requires, field by field, including the four types of economic operator almost no…

Plenty of stores have a cookie banner and assume Consent Mode v2 is handled. Those are two different things. Here is what actually changes, the order the signals need to fire in, and a real case of a half-translated…

A discontinued product, a URL that changed during a migration, a page removed for good: each one deserves a different HTTP status code, and picking the wrong one quietly costs traffic. Here is how to decide, with a real…

A facet is not a UI widget, it is a question answered twice per page: which results match, and how many would match for every other value on offer. Here is how Elasticsearch answers both in one pass, and the two ways…

A shopper ticks a filter that promises 12 results and gets 8, or the other way round. It is not a UI quirk, it is one of the most common problems in faceted search, and on a large catalog it has a very real cost in…

Adding Elasticsearch or a similar engine to PrestaShop improves search, but if the index update is done poorly it can slow down checkout itself. Here is what actually happens when a customer changes a cart quantity.

With a few hundred products, PrestaShop search always feels fine. With tens of thousands, it starts to choke. Here is where the time goes, measured on a real 200,000-product catalog.

An old cart, reopened through a recovery link, shows "Unfortunately, there are no carriers available for your delivery address" even though the address is valid and carriers exist for that zone. The cause isn't the…

A "recover_cart" link with a valid token doesn't open checkout, it bounces back to the homepage, with no visible error. It isn't a link problem: the customer who owns the cart has been soft-deleted, either through GDPR…