You may require GBs of data to do performance or load testing. How your app behaves when there is loads of data.  You need to know the capacity of your application. This is the frequently asked question from the sales team "The customer is having 100GB of data and he wants to know whether our product will handle this? If so how much RAM / Disk storage required?". This article has pointers to the large data corpus.

10 sites to get the large data set or data corpus for free

Each website / blog delivers useful content or service to its users. But website themselves requires some service to monitor and increase its presence. Here are few free services which could be used by Website / Blog. This will be very much helpful for small business owners.

10 Free services for your Website / Blog. Just plug it.

Many new products are coming in the open source world. Few are forking existing project, adding new features to it and selling it as open source product. Few strategies required to follow to sell the product better.

Marketing stratigies required to sell open source product

GPL is widely used and known license in Open Source community. Richard Stallman father of GNU is the man behind GPL. GPL gives freedom and not free software.

Pros and Cons of GPL licenese

Git and Subversion are most popular and widely used version control system. What is the best situation to choose them? It is important to know its pros and cons, evaluate your requirement and choose the right one.

Git vs Subversion

Cloud is nothing but more than one system or application distributed across the network, across the globe. It may have couple of application servers, database server, shared data storage, backup server and lot more. The resources in the distributed environment must have information about each other so that they could co-ordinate and share without any issues. ZooKeeper helps to do that.

Is ZooKeeper mandatory for Cloud

OLAP (Online Analytical Processing), Reporting, Data mining related tasks are usually done by Business intelligence products. They do powerful Extraction, Transformation and Loading (ETL) the data and provides various reports. They use  relational database as its back end. How could they generate better reports? Will column DB do a better job?

Column database vs OLAP

Column oriented database or datastore as the name sounds it stores the data by column rather than by row. It has some advantages and disadvantages over traditional RDBMS. Developer should know the typical situation to choose column  oriented database.


Best situation to use Column database

Before moving to cloud, First decision to make is whether Scale up the hardware or Scale out with multiple systems. Both has its pros and cons.

Scale up vs Scale out. First decision to make before moving to cloud

What if you could reliably run PHP without Nginx or Apache, but also without relying on its internal server? What if you could do async operations in PHP with true multi threading, fully taking advantage of multi core processors without hacks or a jungle of callbacks? What if you had drag and drop installation support for your PHAR packaged web apps in an environment identical to its production counterpart? Welcome to appserver.io – the worlds first open source application server for PHP.

Appserver.io – The First Multithreaded Application Server for PHP written in PHP

Bitcoin is an open source digital currency which could be transferred in a P2P payment network. It is decentralized and it is not controlled by any central authority or banks. It is transferred from person to person and no authority will be aware of your transaction. Its quite different from PayPal or Banks.

How Bitcoin works? A simple introduction.

Recently you might have seen many news that big organization like Redhat, Fedora, Wikipedia switched their database from MySQL. Now Google also going to join them. Why everyone want to move out of MySQL? It is once a popular and stable software. What is the reason behind and what are the possible alternatives.

Is it good time to switch from MySQL and choose some other database?

People who have taken programming as their career has to do coding for almost 30 years. Will they always get an opportunity to do complex tasks or to write project from scratch? The answer is NO. Sometimes they may get but not always. What should they do?

Why Experienced Programmers Should Contribute to Open Source

I could see many many students posting this question in many forums, I want to contribute to open source but How to contribute? There are many ways to do that. I have listed a few and I hope it might be useful.

How to contribute to open source

PrestaShop is an Open Source eCommerce Solution. It comes complete with over 310 features that have been carefully developed to assist business owners in increasing sales with virtually little effort. It is being used in more than 150,000 online stores.

PrestaShop - A feature rich Open Source eCommerce solution

What the benefit will i get, if i contribute to Open Source? This is the frequently asked question by many people. I just want to pen down the benefits which i know and i hope you will agree with it.

Benefits in contributing to Open Source

Open Source projects requires sponsors to fund their project. Few got good funding but few others are struggling to continue their project. A contributor, who does full time work in open source project requires funding to take care his needs. He has to be paid and he cannot do it for free. For those who don't get fund, check out this crowdfunding sites, these are exclusively for open source projects. Join these, get some fund and continue your dream.

Crowdfunding for Open Source Projects

Integrate Ehcache with Spring Boot. In this article, we will explore how to implement Ehcache with Spring Boot, including setup and a simple example.

Integrate Ehcache with Spring Boot

Supercharge Your Python Application: Redis as a High-Performance Cache

Caching in Java using Caffeine

Create Self Signed Certificate using OpenSSL Commands

Mkcert is go-lang project, which is super easy tool to setup certificate authority without any configuration. Using certificates are inevitable these days, data should be transferred in a secure communication channel. Buying a certificate is expensive and mostly companies buy certificates only for production systems. In Dev setup, if we use self-signed certificate then there will be trust errors. mkcert automatically creates and installs a local CA in the system root store, and generates locally-trusted certificates.

mkcert - No Config Certificate Authority Tool for Local Development

OpenSSL is a general purpose cryptographty toolkit that provides an open source implementation of Transport Layer Security(TLS) and Secure Socket Layer(SSL) protocols. It is written in C,assembly and Perl language but wrappers are available in all languages. This article explains about OpenSSL commands.

Holistic usage guide for OpenSSL

Mastering API Integration in React Native with Expo: A Comprehensive Guide

React Native Navigation and Routing with Expo: A Comprehensive Guide

In this detailed guide, we will walk you through the process of building a weather app in React Native using Expo. React Native is a popular framework for developing cross-platform mobile applications, and Expo simplifies the development process.

Building a Weather App in React Native with Expo: A Step-by-Step Guide

Setting Up React Native Development Environment for Android and iOS

How to setup and manage project in Jenkins

Git is the most popular SCM, initially developed to manage source of Linux kernel. Later many clients and tools are developed for Git. In this article we going to see various tools to use with Git.

Various tools to work with Git version control

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