Recently Viewed
Recently viewed products in Magento: widgets, customer data sections, private content and personalization on the storefront.
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https://github.com/Vendic/magento2-recently-viewed-limit
Caps recently viewed items at 10 on client and server. Trims localStorage and truncates sync requests to prevent bloated storage, huge POSTs, and database hammering, mitigating a simple DoS vector.
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