In this post I will present how to connect to MongoDB from a stateless Java EE application, to take advantage of the built-in pool of connections to the database offered by the MongoDB Java Driver. This might be the case if you develop a REST API, that executes operations against a MongoDB.

This post will explain in a simple way how Javascript Closures work. We will go over these topics and frequently asked questions:

• What is a Javascript Closure
• What is the reason behind the name ‘Closure’
• Actually viewing closures in a debugger
• how to reason about closures while coding
• the most common pitfalls of it’s use

Remember the first batch job for Podcastpedia.org, presented in Spring Batch Tutorial with Spring Boot and Java Configuration… There, I would read submitted podcasts from a .csv file to add them to the Podcastpedia.org directory (database). Well today I will present how I automated the creation of this kind of input file, with the help of Easy Batch. Why EasyBatch? Because, after seeing my initial post, I was contacted by its founder, Mahmoud Ben Hassine, to have a look at Easy Batch and give it a try. I did, and I am happy about that. Read on to find out why…

In this post we will do a deep dive into Spring transaction management. We will go over on how does @Transactional really works under the hood. Other upcoming posts will include:

• how to use features like propagation and isolation
• what are the main pitfalls and how to avoid them

You may recall from my post Autocomplete search box with jQuery and Spring MVC, that I use jQuery ui autocomplete to dynamically search for keywords on Podcastpedia.org. I am now in the process of migrating the source base for Podcastpedia.org to Spring 4. I decided to go with the latest version 4.1.0.RELEASE and everything worked pretty smoothly until I got to test the auto-complete functionality presented in the post mentioned before.