Launches and flash sales
Three customers, one last unit. Two leave angry.
In PrestaShop, stock only decreases when the order is validated: until then, everyone sees the available unit and everyone believes it is theirs. RKR Stock reservation in the cart Set aside the units as soon as they enter the cart and show the customer a countdown.
10 minutes
Default reservation, with visible countdown; you choose the duration, from 1 minute to 24 hours
23 designs
for the countdown, with live preview and editable CSS
1.7.8 → 9.x
a single version of the module for all your PrestaShop stores
/ The last unit is sold only once.
Each reservation is created within a row-locked database transaction (SELECT ... FOR UPDATE), so two customers who click "Add to cart" at the same time don't end up with the same last item. And the protection doesn't end at the cart:
The addition is limited to what is available.
If the available units are reserved in other carts, the cart keeps the ones that are available and the customer reads why: how many are left and that the rest can be released in a few minutes.
The payment has a final check
Both the order page and the payment module validation return the customer to their cart if they still have an item reserved by another customer, showing the product and how many units are available. Alternatively, the line item can be removed automatically.
The units are released automatically upon expiration.
An expired reservation stops counting immediately, without waiting for any task. The cleanup is done using the store's own traffic (at most once per minute), and if you wish, you can add the cron URL to run it every 5 minutes.
It doesn't touch your physical stock. Reservations are stored in the module's own tables: they don't write to the PrestaShop stock, and if you deactivate it, the store will function as before. Products sold as backordered (out of stock) are not subject to limitations: their reservation only advances the countdown.
/ A countdown where the customer decides
The timer appears on the product page, in the shopping cart (notification bar, summary panel, and clock on each line), in the header mini-cart, and at checkout. Each location is activated and deactivated separately, and the customer can extend the reservation or release units themselves.
Extensions with limits
By default, there are two 5-minute extensions per booking. You can change the number, the duration, or disable them altogether, so no one blocks your stock indefinitely.
Urgency that is noticeable
When 2 minutes remain, the countdown changes to "urgent," and to "critical" in the final 30 seconds (you can adjust both thresholds). Optionally, an alert sounds and the browser displays a notification when the time expires.
Email notification before expiry
Customers with an account receive an email when their booking has a few minutes remaining (2 by default), with a direct link to the shopping cart. This feature is disabled by default, and the templates are available in Spanish, English, French, Italian, German, and Portuguese.
Guests included
Anyone who buys without an account also makes a reservation and is counted in the inventory. If you only want registered customers to make reservations, disable this feature.
Scarcity with real data
In the listing, "Only N units left" and "N units reserved in other carts" come from the actual stock minus reservations, not from an invented number.
/ Rules for each pitch
General settings apply to the entire store, and you can add rules for specific products and categories. The product rule takes precedence; if there isn't one, the rule for the deepest category takes precedence; if there's no category rule, the general settings take precedence. A value of 0 in a rule means "inherit."
Date window
A rule can have a start and end date: perfect for a 48-hour drop or a flash sale. Outside of the specified window, the rule is ignored and the general settings apply.
Maximum per customer and per rule
Limits the number of units that one person can reserve per product (10 by default): protection against bots and resellers during launches.
Margin of safety
Units that are never offered: with a margin of 2, a product with 10 units shows 8 available. Cheap insurance if another system, such as an ERP, also records your stock.
By combination
Reservations are counted by product and by combination, so each size or color has its own reserved stock.
/ Measure what happens to your stock
The Statistics tab shows you the booking funnel (booked, extended, converted to an order, expired, and released), a heat map by day of the week and time, the most booked products, the reasons for each release or rejection, and the breakdown between guests and registered customers. You choose the period (today, 7, 30, 90, or 365 days, or custom dates) and export the record as a CSV file. The charts work without external services.
Each time the module prevents the sale of a unit that another customer had reserved, it records it as "denied": it's your counter of Last units saved. Additionally, in the product details of the back office you can see the active reservations for that product (cart, customer, units, time remaining and upgrades) and the rule that applies to it.
/ Make it look like your store
Choose from 23 designs, from classic to frosted glass, neon, or dark, and customize colors, borders, typography, sizes, and shadows. When you select a design, the preview updates instantly, without reloading the page, and includes its own countdown timer. You can assign different animation effects to the normal, urgent, and critical states (while respecting the system's reduced motion settings), and fine-tune them with your own CSS from the back office.
The texts the customer sees are edited by language and come standard in Spanish, English, French, Italian, German, and Portuguese. The module is multi-store: each store has its own settings. In the back office, it appears under «Rekire MODULES» → «Stock Reservation», with Settings, Rules, Design, Statistics and a step-by-step guide.
/ What you should know
The module requires stock management to be enabled in PrestaShop; without it, there is no stock to reserve, and it remains inactive instead of blocking anything. It uses the standard product, cart, and checkout hooks: if your theme doesn't print any of them, the guide tells you where to check. If you already have version 1.1.x, you upload the new ZIP: the module moves the menu to «Rekire MODULES”, regenerates the stylesheet and respects the text you have changed.
Compatible with PrestaShop 1.7.8 and 9.x
Developed and maintained by REQUIRE
