Reading time ~25 minutes I need a document database. Why? There are areas in my problem generating (How to calculate 17 billion similarities) pet project cookit that are just asking for a document modelling approach. Most people will say that this is a straightforward problem to solve:Slap on MongoDB, and you are ready to go. It is NOT a good idea.Get email notifications about new posts: This article started as a way to structurize the comparison process but grew a bit more ( just like my previous ...

One of the most important things during a penetration test is to gain access to administrator account. If the application (for example webserver) is well configured, it is most often run with limited user rights, only able to run a specific application. When we can get low privileges access to the server using some vulnerability, the next step is to get higher permissions to read important files, continue network exploration etc. To do this, we must use the privilege escalation technique.

Why does it happen? Why do we limit ourselves to relational databases only? Of course, there exists a set of situations in which relational databases are the best tool for the job, but – conversely – there exists a set of situations where relational database is a very inferior tool. Each type of tool has its purpose, limitations, and applications in which the tool will be the best. The important thing is not to look at the application from the point of view of a database only. We need to look at the ap...

Selected Aspects of Document Synchronization in Distributed Systems Two of the projects in which I have participated recently, were distributed systems based on the document replication. Each of them was slightly different, which affected the solutions. In this article I’m going to present briefly the main assumptions and requirements for each of the projects, as well as the implemented solutions. I’m also going to mention a few important problems that we had to deal with.General description of ...