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

Building CRUD REST API using Go

Building a CRUD To-Do List App in React Native with Expo: A Step-by-Step Guide

Cassandra is a highly scalable and distributed NoSQL database known for its ability to handle large volumes of data across multiple nodes. It is designed to provide high availability and fault tolerance, making it a popular choice for applications that require real-time data processing and high read and write throughput. In this article, we will explore some common use cases for Cassandra and learn how to perform CRUD (Create, Read, Update, Delete) operations in Python using the Cassandra driver.

Cassandra: Use Cases and Python CRUD Operations

In this article we will learn how to send emails using jakarta mail

How To Send Email using Jakarta Mail

Most of the projects will have a requirement of sending and receiving mails. We have mentioned about GreenMail - Email Test Framework, in our previous article about API based SMTP testing. In this article, we discuss about MailHog - Web and API based SMTP testing. You send out a mail from your code and you can check it via web visually and also via API. Those who do API testing can check via API. Developers may want to visually verify the format of the mail. MailHog is a best bet for SMTP testing.

MailHog - Web and API based SMTP testing

In any project there will be a need to send mail out to users. It could be an alert mail, forget password or authentication related mail. Mail is the default communication between the software and the users. As a developer, we can write code, to send out a mail but we need to make sure whether it got successfully received and how the body of mail, Is it the same like what we have sent. GreenMail is a Email test framework which helps to send and receive mails. It is a test framework which supports SMTP, POP3, IMAP including SSL. 

GreenMail - Email Test Framework in Java

This guide walks you through the process of installing and configuring Minio on your system, ensuring you can quickly get up and running with this robust storage solution.

Step-by-Step Guide: How to Install and Configure Minio

How to install and configure Apache Kafka

How to Install and Configure Apache Kafka

How to install and self host Supabase

In this article In this article, we will explore how to create Text pdf, Image PDF and also how to extract text from PDF.

Create and Extract text from PDF using Apache PDFBox

OpenPDF is based on a fork of iText version 4. iText is a widely used PDF library but they changed their license and moved to AGPL. In this article, we can see how to read and write to PDF, How to extract text from PDF and How to create password protected PDF.

Read and Write PDF using OpenPDF

We show lot of data in our web applications, it will be awesome if we quickly download specific part of PDF rather than printing it. It will be easy to share for different stakeholders and also for focused meetings. In web application development, download to PDF means, we need to develop backend api specifically and then link it in frontend which takes longer development cylce. Instead it would be really great, if there is way to download what we see in the user interface quickly with few lines of Javascript, similar to export options in word processing application. 

Generate PDF from Javascript using jsPDF

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