Archive
Creating a Sharded Cluster of Replica Sets in MongoDB.
MongoDB is a great NoSQL database management system. But using a single standalone MongoDB server is not the way you want to use it in the production level. In case you want to scale out and increase the throughput of your application you can use sharding to distribute your data in multiple clusters, called shards. Furthermore, MongoDB can support continuous availability and fault tolerance by using replication servers that form a replica set. A replica set not only provides us a mechanism for fault tolerance and availability but a way for safely and continuously backing up our data. The latency of our database queries can be improved by using primary and secondary indexes.
Neo4j code infrastructure for .NET enterprise applications.
Here I am, rock you like a hurricane!
The Spring framework from the Java “universe” currently supports efficiently the Neo4j graph database. However, the Spring.NET framework from the C# “universe” does not support Neo4j and generally a decent code infrastructure library for Neo4j is missing from the .NET open source world at the moment.
A starting code infrastructure could be a Generic Repository for supporting CRUD operations, a Relationship Manager for managing relationships between nodes and a Unit Of Work for supporting transactions. In a recent project, I have coded a prototype code infrastructure on my own since I couldn’t find a simple, well-written and unit-testable example. This is the reason why I would like to give it to you people so that you can benefit from it.
A dynamic string data structure helper implementation.
In this article I will present to you a dynamic string data structure helper implementation. In C, a string is just an array of characters terminated with the null character (NUL in ASCII). Also, some times we handle a string by using a pointer to a buffer containing sequential characters terminated also with the null character. The C standard liibrary provides various functions for string manipulation but it seems that whenever we want to extend a string by using pointers we have to perform all the time memory reallocation which leads to a bad evolution of replicated code. In a recent project, I needed to create a string and append to it any number of new strings in order to extend it without using strcat, strcpy, strlen and realloc functions all the time. So, I created a simple dynamic string data structure which solved my specific problem and I would like to share it with you people.
A useful function for getting the host name and service of a socket.
In this article I will present to you a useful function for getting the host name and service of a socket.
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FSF News
- Zerocat Chipflasher "board-edition-1" now FSF-certified to Respect Your Freedom
- Contract opportunity: JavaScript Developer for GNU LibreJS
- Public Lab and Karen Sandler are 2017 Free Software Awards winners
- LibrePlanet free software conference celebrates 10th anniversary, this weekend at MIT, March 24-25
- Free Software Foundation releases FY2016 Annual Report
- Free Software Foundation receives $1 million donation from Pineapple Fund
