Data Engineering Resources

How MySQL 5.7 Handles 'utf8mb4' and the Load Data Infile

Alexander Rubin shows how MySQL 5.7 handles UTFMB4 and the load data infile through text and code snippets, and how to insert emojis.

July 7, 2016

by Alexander Rubin

· 24,143 Views · 1 Like

Query DynamoDB Items With Java

We have a look at querying items in DynamoDB with Java with some example code.

July 6, 2016

by Emmanouil Gkatziouras

CORE

· 51,376 Views · 5 Likes

MongoDB Java API: Using a Sequence Collection With FindAndModify()

Documents in MongoDB have a unique object ID when they are created. How can we get around this to develop a more effective REST API when document lookups are involved?

July 6, 2016

by Kevin Hooke

· 10,127 Views · 2 Likes

Notify Events From PostgreSQL to External Listeners

What happens when you need to call external programs from a PostgreSQL database? Read on for a solution.

July 6, 2016

by Gonzalo Ayuso

· 29,816 Views · 4 Likes

Say No to Venn Diagrams When Explaining JOINs

It's easy to use Venn diagrams to explain JOINs, but when you think about it, they're not quite the right tool to use. That's where JOIN diagrams come in.

July 6, 2016

by Lukas Eder

· 15,662 Views · 32 Likes

Self-Describing Logging Using Log4J

How many times have you reviewed a log file without the data key (secret decoder ring) that explains what everything means. When a user more informative and intuitive format like JSON or XML? It's not too hard to do and can be quite helpful. Here's an example.

July 5, 2016

by Bob Reselman

· 8,183 Views · 2 Likes

How to Use Xively Platform in an IoT Project

This tutorial explores how to use Xively and how to connect a “smart object” to Xively platform.

July 4, 2016

by Francesco Azzola

· 18,990 Views · 2 Likes

Performance Improvement in Java Applications: ORM / JPA

This article recommends practices for when you are developing an application using a JPA provider or directly an ORM framework.

July 3, 2016

by Gustavo Gomes

· 30,627 Views · 49 Likes

Meet Kapua: An Open Source End-to-End IoT Cloud Platform

Red Hat, Eclipse, and Eurotech have announced Eclipse Kapua — an end-to-end open source IOT cloud platform that combines and enhances several current solutions.

July 1, 2016

by Mike Gates

· 15,687 Views · 6 Likes

My Favorite Spring Data JPA Feature

I’m impressed by the complexity of query you can write using Spring Data. My favourite feature is returning the first or top records from a table.

July 1, 2016

by Martin Farrell

· 47,205 Views · 26 Likes

Insert Items to DynamoDB Tables Using Java

Read on to learn how you can use good old Java to get items set up within DynamoDB tables.

July 1, 2016

by Emmanouil Gkatziouras

CORE

· 31,073 Views · 3 Likes

Automating Penetration Testing in a CI/CD Pipeline: Part 3

The final part of a series on using OWASP ZAP to integrate penetration testing into your continuous delivery pipeline using AWS and Jenkins.

July 1, 2016

by Nick DeClario

· 5,386 Views · 2 Likes

Microservices With Go Micro and NATS.io

Oren Golan published an excellent piece on his blog this past weekend sharing an example of how Micro and NATS are providing microservices for financial modeling and Bitcoin visualization.

June 30, 2016

by Brian Flannery

· 9,179 Views · 2 Likes

Visualizing Concurrency Patterns in Go

Ivan Daniluk shows over 10 visualizations of concurrency patterns in Go, including timers, ping-pong, servers, and goroutines leak.

June 29, 2016

by Ivan Daniluk

· 8,890 Views · 10 Likes

Displaying SQL Data in a Text Box Using C# [Code Snippet]

Here's a quick and easy way to put SQL database info into a text box when using C#.

June 29, 2016

by Arun kumar

· 27,415 Views · 3 Likes

CASE Statement in GROUP BY

Sometimes tackling a problem in a single query isn't the best approach. We have a look at a scenario where a CASE statement is needed in a GROUP BY clause. What's the best way to handle this?

Updated June 29, 2016

by Grant Fritchey

· 21,411 Views · 2 Likes