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Custom Cassandra Data Types

In the blog post Connecting to Cassandra from Java, I mentioned that one advantage for Java developers of Cassandra being implemented in Java is the ability to create custom Cassandra ...
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Auditing infrastructure for your app using Spring AOP, Custom annotations and Reflection

The next post will demonstrate how to write simple auditing using Spring AOP and annotations. The auditing mechanism will be clean, efficient and easy to maintain (and Kewwl!). I will ...
java-interview-questions-answers

Hibernate Identity, Sequence and Table (Sequence) generator

Introduction In my previous post I talked about different database identifier strategies. This post will compare the most common surrogate primary key strategies:IDENTITY SEQUENCE TABLE ...
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How to implement a custom password strength indicator in JSF

Verifying password strength using JavaScript is a common task. In this post, I will show how to add a password strength indicator to an JSF based web application. The password component ...
java-interview-questions-answers

Writing Tests for Data Access Code – Unit Tests Are Waste

A few years ago I was one of those developers who write unit tests for my data access code. I was testing everything in isolation, and I was pretty pleased with myself. I honestly thought ...
spring-interview-questions-answers

Common mistakes when using Spring MVC

 When I started my career around 10 years ago, Struts MVC was the norm in the market. However, over the years, I observed the Spring MVC slowly gaining popularity. This is not a surprise ...
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Java EE Concurrency API Tutorial

This is a sample chapter taken from the Practical Java EE 7 development on WildFly book edited by Francesco Marchioni. This chapter discusses about the new Java EE Concurrency API (JSR ...
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ZooKeeper, Curator and How Microservices Load Balancing Works

How Zookeeper makes sure that every worker happily gets some stuff to do from job delegating manager. Apache ZooKeeper is a tool to register, manage and discover services working on ...
spring-interview-questions-answers

SpringBoot: Introducing SpringBoot

SpringBoot…there is a lot of buzz about SpringBoot nowadays. So what is SpringBoot? SpringBoot is a new spring portfolio project which takes opinionated view of building production-ready ...
java-interview-questions-answers

Using @NamedEntityGraph to load JPA entities more selectively in N+1 scenarios

The N+1 problem is a common issue when working with ORM solutions. It happens when you set the fetchType for some @OneToMany relation to lazy, in order to load the child entities only ...
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