Lucene and Solr are most popular and widely used search engine. It indexes the content and delivers the search result faster. It has all capabilities of NoSQL database. This article describes about its pros and cons.

Lucene / Solr as NoSQL database

U.S. Senate is planning to introduce Stop Online Piracy Act (SOPA) act, PROTECT IP Act (PIPA). This may punish websites that publish content generated by third parties. Wikipedia, Reddit, Social bookmarking sites, Mailing list archival service providers and lot more sites has to move out from United States.

Will SOPA act damage the Free speech in Internet?

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

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

GlobalSign is one of the Internet’s original trust service providers (technically known as Certificate Authorities). They have issued millions of trusted Digital Certificates to people, servers and mobile devices for Public Key Infrastructure (PKI) enabled solutions and applications. They are now giving certificates for free for open source projects.

GlobalSign - Free Certificate for Open Source Projects

Coursera is a social entrepreneurship company that partners with the top universities in the world to offer courses online for anyone to take, for free. Their courses include in various categories like Biology, Business management, Computer science, Robotics, Artificial Intelligence, Finance, Nutrition, Law, Mathematics, Medicine, Genetics, Data analytics and lot more.



Coursera - Take the World's Best Courses, Online, For Free

Advance Solidity: Object-Oriented Design

Advance Solidity: Payments and Transactions

Beyond Fundamentals: Advanced Solidity

Mastering the Art of UI Design with Modifiers in Jetpack Compose

Building Your First React Native App

Setting Up React Native Development Environment for Android and iOS

Testing in Dart and Database Interaction

Basics of Dart for Web Development

Object-Oriented Programming in Dart

Educate and Empower software professionals in emerging technologies, news and best practices.