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

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

The release 4.0 is one of the important milestone for Lucene and Solr. It has lot of new features and performance important. Few important ones are highliggted in this article.

Whats new in Lucene / Solr 4.0

Solr is a search engine built on top of Lucene. It supports REST interface and has lot of built-in capabilities. Solr package has Admin UI interface which has support to perform query and even delete the contents of the index. If you are using Solr in production then you may need to restrict access. I saw couple of questions in the group related to this topic. Thought to write an article explaining few tips to restrict the user access to Solr admin UI.

Restrict Solr Admin Access

Lucene is most powerful and widely used Search engine. Here is the list of 7 search engines which is built on top of Lucene. You could imagine how powerful they are.

8 Best Open Source Searchengines built on top of Lucene

Microsoft is monopoly in the commercial software. Here are 15 best alternatives to most popular and widely used Microsoft products.

Top 15 Open source alternative to Microsoft products

Users login in to the Websites, Blogs, Forum and adding their content, comments, asking or answering the questions etc. If user has added his photo then it will get displayed besides his content but not everyone provides his photo image to the sites. Most of the sites used to display a common avatar image for those who have not provided their image. When we read the content, it may be odd to see the same image representation for all users. Identicon comes for the rescue.

Identicon - Get unique avatar for your website users

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

Solr and Elastic Search are built on top of Lucene. Both are open source and both have extra features which makes programmer life easy. This article explains the difference and the best situation to choose between them.

Solr vs Elastic Search

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?

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

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

Create Content Using Spring AI and OpenAI

Connect to PostgreSQL using Spring Boot JDBC Client and Hikari

Get to know how to perform CRUD operations in Mongo DB using Spring Boot.

Integrate MongoDB with Spring Boot

Connection Pooling in Java

Integrate SQLite3 with NodeJS

SQLite databases are compact, lightweight, file-centric databases frequently employed in embedded systems and modest applications. Spring Boot, a popular Java framework, provides easy integration with various databases, including SQLite. In this article, we'll explore how to connect SQLite with a Spring Boot application, including setting up dependencies, configuring the database connection, creating entities, and performing basic CRUD (Create, Read, Update, Delete) operations.

Integrate SQLite with Spring Boot

In this article, we will explore, How to build RESTful APIs using Jersey in Java.

Build REST API using Jersey in Java

Build CRUD API in Golang using GoFr Framework

Testing in Dart and Database Interaction

Create Symmetric and Asymmetric (Public and Private) Keys using OpenSSL Commands

The 5 Phases of Ethical Hacking

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

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