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Many developers are unaware of the great power that Xdebug tool adds to the process of debugging a php project. In this article I will explain how to install and set up Xdebug for Ubuntu (and perhaps other linux distributions) users. After following the instructions you will be able to debug your php project whether you run it on your local Apache web server or via the command line ("cli"). The IDE is assumed to be NetBeans.

One of the main advantages of MongoDB is the high-availability, redundancy and strict consistency, which is implemented with Replicasets - group of Mongo database which runs simultaneously and contains the same data. The idea is that once one of the sets fails, another one will take his job to response, even it was the primary set. It's totally automatically failure-safe and one of the basis of production deployment. In this article we will explain how to deploy such an environment including architecture.

Our professional developers use NetBeans IDE, and our bug tracker is JIRA which is hosted on Atlassian. In addition, we are using BitBucket as git hosting, and is integrated to JIRA.

The BillRun is built on MongoDB, which is the open-source, document database, popular among developers and IT professionals due to its agile and scalable approach. MongoDB is also known as the leading NoSQL database technology.

Recently, we've received a lot of questions about how we implemented a billing system without a database which supports transactions nor row locks.

In this article we will try to explain how to verify integrity and concurrency using a MongoDB database. In addition, this article dispels the myth about MongoDB not being able to deal with ACID (atomic, consistent, isolated and durable) operations.

Recently we required to add new credit card on Amazon Web Services, and remove the old one.