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The Latest Data Engineering Topics

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Hypothesis Test Using Pearson’s Chi-squared Test Algorithm
In this article, the author will show how to perform statistical hypothesis test using Spark machine learning API (aka Spark MLlib).
November 25, 2016
by Md. Rezaul Karim
· 14,823 Views · 2 Likes
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HDFS Cheat Sheet
This article serves as a quick hands-on guide and tutorial to the most useful HDFS commands for managing HDFS files from the command line.
November 24, 2016
by Tim Spann DZone Core CORE
· 38,731 Views · 5 Likes
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Random Forest as a Classifier: A Spark-based Solution
In this article, the author will demonstrate how to use the Random Forest as a classifier and regressor with Big Data processing engine Apache Spark.
November 23, 2016
by Md. Rezaul Karim
· 24,456 Views · 6 Likes
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Working With Time-series Data on Redshift
Working with data ordered in time has some unique challenges that we should take into consideration when we design our data warehouse solution.
November 23, 2016
by George Psistakis
· 8,643 Views · 3 Likes
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Make Your Own Light Switch With Java and a Raspberry Pi
Looking for an IoT project? Look no further than developing your own switch with the helping hand of a library, some Java, and a Raspberry Pi.
November 23, 2016
by Hemambara Vamsi Kotari
· 19,224 Views · 9 Likes
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Oracle RDBMS + Neo4j: Migrate or Sync a Subset of Data
Learn two approaches of getting your data from Oracle RDBMS to Neo4j — syncing or migrating — and the benefits and hazards of each one.
November 22, 2016
by Gabe Stanek
· 5,810 Views · 2 Likes
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Get to Know Netflix's Zuul
Here's a look at what Zuul can offer your applications, ranging from authentication and security to routing to resiliency and more.
November 22, 2016
by Rafael Salerno
· 86,434 Views · 19 Likes
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Control a CNC Machine Using Java or Groovy
Feel like doing your own woodworking, or other, similar work? Take a look at how you can give commands to your own computer numeric control machine.
November 22, 2016
by Igor Suhorukov
· 15,377 Views · 16 Likes
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Persisting Natural Key Entities With Spring Data JPA
Learn a handy trick to persist your natural key entities using Spring Data. See how that compares to surrogate keys and what other tricks that permits.
November 22, 2016
by Dawid Kublik
· 21,736 Views · 5 Likes
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Performance Testing With a Think Time
The author investigates the effect of think time on the performance (i.e., throughput and latency) of a WSO2 API Manager under different concurrency levels.
November 22, 2016
by Malith Jayasinghe
· 22,305 Views · 7 Likes
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Create Facebook Messenger Bot With Structured Messages in PHP
In this article, learn how to create a simple Facebook chatbot that can carry out effective conversation with your users.
November 22, 2016
by shahroze nawaz
· 31,030 Views · 10 Likes
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5 Exceptional Regression Testing Tools
Open-source tools are free, but we need to look at the bigger picture. Check out this list of five regression testing automation tools for enterprises.
November 22, 2016
by Pratik Satasiya
· 50,876 Views · 9 Likes
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Developing a Facebook Chatbot With AWS Lambda and MongoDB Atlas
Learn how to program your own chatbot with the helping hands of AWS Lambda and MongoDB's DBaaS, Atlas.
November 21, 2016
by Jason Ma
· 7,031 Views · 7 Likes
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Elasticsearch Mapping: The Basics, Two Types, and a Few Examples
In this post we take a deep dive into Elasticsearch, including the basics as well as some different field types, replete with examples to help get you going with both static and dynamic mappings!
November 21, 2016
by Daniel Berman
· 42,351 Views · 1 Like
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How to Run Maven-Based Projects on a Remote Raspberry Pi Using NetBeans (Part 2)
Continuing on from part one, learn how to get your repository to work for you by running external commands from Maven to get your project on a Pi.
November 21, 2016
by Ken Fogel
· 10,088 Views · 1 Like
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7 Tips for Writing Better Unit Tests in Java
Want to write better unit tests in Java? Look no further. From test-driven development to measuring code coverage, here are seven tips to get the job done.
November 21, 2016
by Reshma Bidikar
· 177,290 Views · 29 Likes
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Why Do Microservices Need an API Gateway?
With the growth of API-centric IT initiatives, API gateways and management layers are common place. Should we consider an API gateway for microservices?
November 20, 2016
by James Higginbotham
· 28,520 Views · 16 Likes
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RETURNING in PostgreSQL
Here's a quick overview about using the RETURNING keyword in PostgreSQL, letting you return values from after you run your insert or update statements.
November 18, 2016
by Lorna Mitchell
· 21,490 Views · 2 Likes
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Three Methods to Automatically Validate PDF Data
Want to validate data from a PDF? Sure you do. See three different ways you can handle it, each with their own benefits.
November 18, 2016
by Bipin Patwardhan
· 39,789 Views · 8 Likes
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Tracing in Microservices With Spring Cloud Sleuth
Follow along to gain some insight into tracing requests that span multiple microservices in the Spring Cloud ecosystem.
November 18, 2016
by Ryan Baxter
· 110,479 Views · 21 Likes
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