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Do you really need instanceof?

Using instanceof is a code smell. I think we may agree on that. Whenever I see a construction like that I’m sure that something went awry. Maybe someone just didn’t notice a problem when making a change? Maybe there was an idea, but it was so complex that it required so much effort or time that a developer made a ...

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Drools 6.5.0.Final is available

The latests and greatest Drools 6.5.0.Final release is now available for download. This is an incremental release on our previous build that focus on a few key improvements to round up the 6.x series. You can find more details, downloads and documentation here: Drools website Downloads Documentation Release Notes Read below some of the highlights of the release. You can also ...

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4 Hot Business Intelligence Trends: When Business Intelligence Meets Big Data (Part 1 of 4)

Business intelligence (BI), which is one of the oldest concepts in data processing, is undergoing a radical reinvention. The concept has already evolved considerably since it first gained popularity in the early 1990s (and particularly since its first mention in the Cyclopædia of Commercial and Business Anecdotes in 1865!). In fact, the quest to mine transactional data for business insight ...

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An agile introduction to DevOps – Working software

The agile manifesto says we value working software. What is working software anyway? We can talk about software working in different contexts. First are the non-tangible parts (more working than software): Idea – The ideas for the product we’re going to build need to make sense and solve the our customer problem Design – We need to have a proper ...

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Forwarding Logs From All Containers Running Anywhere Inside A Docker Swarm Cluster

In this article, we’ll discuss a way to forward logs from containers created as Docker Swarm services inside our clusters. We’ll use the ELK stack. They’ll be forwarded from containers to LogStash and, from there, to ElasticSearch. Once in the database, they will be available through Kibana. Environment Setup We’ll start by creating a Docker Swarm cluster. I will assume ...

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Work with Parallel Database Streams using Java 8

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What is a Parallel Database Stream? Read this post and learn how you can process data from a database in parallel using parallel streams and Speedment. Parallel streams can, under many circumstances, be significantly faster than the usual sequential streams. With the introduction of Java 8, we got the long awaited Stream library. One of the advantages with streams is that ...

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Database CRUD Operations in Java 8 Streams

java-interview-questions-answers

The biggest obstacle to overcome when starting out with a new tool is to get your head around how to do the little things. By now you might feel confident in how the new Java 8 Stream API works, but you might not have used it for database querying yet. To help you get started creating, modifying and reading from ...

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Best Practices on Migrating from a Data Warehouse to a Big Data Platform

Offloading cold or unused data and ETL workloads from a data warehouse to Hadoop/big data platforms is a very common starting point for enterprises beginning their big data journey. Platforms like Hadoop provide an economical way to store data and do bulk processing of large data sets; hence, it’s not surprising that cost is the primary driver for this initial ...

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MQTT Protocol Tutorial

MQTT protocol is a Machine to Machine (M2M) protocol widely used in Internet of things. It is a message based protocol. It is extremely light-weight and for this reason, it is adopted in IoT ecosystem. Almost all IoT cloud platforms support MQTT protocol to send and receive data from smart objects. There are several implementations for different IoT boards like Arduino, ...

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