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Spring Integration 4.0: A complete XML-free example

1. Introduction Spring Integration 4.0 is finally here, and this release comes with very nice features. The one covered in this article is the possibility to configure an integration ...
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Seven Databases in Seven Weeks – Hbase Day 2

This post is a recap of the second day of Hbase from the Seven Databases in Seven Weeks book. Most of the commands and scripts can be found at GitHub: https://github.com/eyalgo/seven-dbs-in-seven-weeks/tree/master/hbase/day_2 Streaming ...
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Who’s afraid of the big bad class?

Ferocious, guzzling black holes of the software universe, super-massive classes result from run-away positive feedback: the class grows so huge that programmers fear any attempt at ...
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HOW-TO: Quartz Scheduler with Clustering in JEE application with MySQL

Quartz Scheduler is one of the most popular scheduling library in Java world. I had worked with Quartz mostly in Spring applications in the past. Recently, I have been investigating ...
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Choosing a fast unique identifier (UUID) for Lucene

Most search applications using Apache Lucene assign a unique id, or primary key, to each indexed document. While Lucene itself does not require this (it could care less!), the application ...
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Android SwipeRefreshLayout Tutorial

In this post, we will describe SwipeRefreshLayout component. This component should be used whenever the user can refresh the UI using swipe gesture. In a previous post, we talked about ...
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SQL Server Trick: Circumvent Missing ORDER BY Clause

SQL Server is known to have a very strict interpretation of the SQL standard. For instance, the following expressions or statements are not possible in SQL Server:                   -- ...
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Jax-RS custom exception handling

One of the nice things about working with JEE is the components available really are pretty standard.  While using JAX-RS, sometimes you need to control how exceptions get processed ...
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Too Fast, Too Megamorphic: what influences method call performance in Java?

Whats this all about then? Let’s start with a short story. A few weeks back I proposed a change on the a Java core libs mailing list to override some methods which are currently final. ...
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Apache Solr real-time live index updates at scale with Apache Hadoop

Episode # 22 of the podcast was a talk with Patrick Hunt We talked about the new work that has gone into Apache Solr (upstream) that allows it to work on Apache Hadoop. Solr has support ...
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