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Concurrent checkouts can lead to negative stock


I'm looking for someone to solve the below issue in OpenCart:


When two customers check out concurrently for the same product and the total quantity being ordered is greater than the quantity available, the stock can become negative even if the ‘Store Checkout’ setting under Stock is set to ‘no’.

Steps to reproduce

Start site, create two customers, create/pick test product and allocate some stock.

Both customers add the product to their carts such that each cart individually is under the available stock, but combined they exceed the available stock.

Perform a checkout concurrently, making sure both customers finish checkout (click the ‘Confirm Order’ button) as close to the same time as possible.

We have reproduced this behavior on a single machine, by performing the above steps by simulating one customer in one browser window and another customer in a second browser window.

Expected Result

One of the two checkouts fails to complete.

Actual Result

Both checkouts succeed and the quantity for the product is negative in the admin console.

Kĩ năng: Open Cart

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Về Bên Thuê:
( 9 nhận xét ) Riyadh, Saudi Arabia

ID dự án: #28333006

14 freelancer chào giá trung bình$176 cho công việc này


Hi,I Have read your project description.i have 8 year exp. in opencart. i have completed 400+ opencart project.i m the top opencart developer in this [login to view URL] check my review and rating and match my skills with Thêm

$250 USD trong 10 ngày
(289 Nhận xét)

Hi, I am interested in your project. I have 7-year experience on Opencart and my completed projects on freelancer.com are on Opencart. I understood your requirement. I can have solution for your case. Please feel fre Thêm

$140 USD trong 4 ngày
(164 Nhận xét)

Hello, I am expert in Opencart and I have fixed the similar issue on a site earlier. So I am 100% confident to do it. I will check on the checkout page that if product stock is 0 or less than checkout will not complet Thêm

$100 USD trong 2 ngày
(35 Nhận xét)

Good Day, I totally understand the test case & desired output you have given I can easily achieve this. Please ping me anytime to discuss & I can start immediately.

$200 USD trong 1 ngày
(14 Nhận xét)

Dear Concern I work in Opencart and i am interest to work with you. Have a time to chat for more information? I am available to chat with u. Thanks Suman

$200 USD trong 7 ngày
(52 Nhận xét)

Hello Sir, I am an expert Opencart developer and I can fix your issue. You have explained issue very well. I can help to fix this issue. Award project and create milestone. Thanks, Pratibha

$222 USD trong 4 ngày
(22 Nhận xét)

very honestly without proper information about job i can not give exact cost. i am having all skills for this project that's why you can see my bid [login to view URL] be my charges will be higher because my quality of output wi Thêm

$140 USD trong 7 ngày
(32 Nhận xét)

Hi, I have good experience on Opencart web development sure I can make web page as per your requirements please message for other details and shear your current site. I have worked on similar projects and are confiden Thêm

$100 USD trong 4 ngày
(8 Nhận xét)

Hi, I have read your job carefully and I am interested in your job post for a web developer to solve your issue and it can be done as per your expectation. I have experience in the specific field your are looking for. Thêm

$250 USD trong 3 ngày
(4 Nhận xét)

Hello, We're experienced with Opencart customization, API integration, bug fixing, and advanced development could be interesting to you. Here is a couple of relevant work examples on which we're working, please feel f Thêm

$250 USD trong 10 ngày
(1 Nhận xét)

Dear client. Nice to see you. I am an opencart expert who can handle your project. Checking your proposal, I completely understood. Please open chat for more details. I will fix the nagative number issue. Regards from Thêm

$150 USD trong 2 ngày
(0 Nhận xét)

Hi, I know you are looking for an fulll stack web developer. For the last few years, I am mainly focusing on web development with shopify, opencart and did some good jobs. Especially, I have a good experience with inte Thêm

$100 USD trong 2 ngày
(0 Nhận xét)

Hello. I can help you as well I'll provide you good result I'll do my best for this job Please contact me best regards Aleksandra Kholmogorova

$250 USD trong 7 ngày
(0 Nhận xét)

I've already fixed such issue previous. Will check the product quantity just before clicking the confirm order button. If not in stock, will redirect to shopping cart page. I've very good experience in developing e-c Thêm

$111 USD trong 2 ngày
(0 Nhận xét)