MongoDB-OrderTransactions

https://github.com/magento-hackathon/MongoDB-OrderTransactions

Hackathon Team

Anthony, Andreas, Rouven, Allistair, Vinai, Matthias

About this project

Important: this code is a proof of concept and in no way meant to be used in production!

You can scale Magento in many ways but there is one bottleneck which won't go away: the checkout process.When an order is placed, Magento does a lot of work in the background. This poses a problem for high volume stores.

How it works

This extension (part of the Magento Hackathon Munich in March 2012) uses a MongoDB database to solve the issue.The basic idea is to not create the orders directly on checkout but to push the order creation task to a queue which is processed by a cron job.
The customer gets the confirmation as soon as the data data is written to the queue which should speed up the checkout quite a bit.

To make this possible, the following aspects have to be considered and implemented:

save the quotes information in MongoDB and keep it up-to-date whenever the customer changes his cart.
check if there are enough articles in stock when a user adds product to the cart.
after the checkout, transform the quote to an order in MongoDB, create a job to insert the orders into the Magento database
remove old entries (completed jobs etc.) in the MongoDB database periodically.
Magento uses the order as a foreign key in several flat tables and the order addresses. Therefore the creation of this entries has to be pushed to the queue as well.

Requirements

MongoDB. Obviously. Find out how to install it in the
MongoDB documentation.
MongoDB PHP driver. This is a PECL extension. Check the
installation guide.

Todo

Fix Mage_Checkout_Model_Type_Multishipping::createOrders()It doesn't use sales/service_quote::submitAll() or sales/service_quote::submitOrder()
Update MongoDB when user logs in (quote data is not updated correctly when you add products as guest and then log in?)