Data Resources

Counting Distinct Users in Real-Time With Redis Using Low Memory

In this article, take a look at how to handle a million distinct user records by allocating less than 2MB of memory in Redis Cache server.

Updated May 25, 2019

by Ahmet Karakaya

· 27,828 Views · 10 Likes

An Introduction to Temporal Data Handling With Apache Flink

Learn how to express continuous stream enrichment in relational and time-varying terms using Flink.

May 24, 2019

by Marta Paes

· 13,961 Views · 6 Likes

Access Redshift Data With Entity Framework 6

This article shows how to access Redshift data using an Entity Framework code-first approach. Entity Framework 6 is available in .NET 4.5 and above.

May 24, 2019

by Jerod Johnson

· 9,145 Views · 4 Likes

Build a Spring Boot App With Flyway and Postgres

Learn more about building Spring Boot apps with Postgres and Flyway.

May 24, 2019

by Lindsay Brunner

· 101,714 Views · 18 Likes

Hibernate Envers: Simple Implementations (Part 1)

Look at an introduction to Hibernate Envers and see a simple implementation.

May 23, 2019

by Sanjoy Kumer Deb

· 29,366 Views · 7 Likes

HDFS Architecture and Functionality

In this article, we take a deep dive into the file system used by Hadoop called HDFS (Hadoop Distributed File System).

May 23, 2019

by Dheeraj Gupta

· 141,376 Views · 6 Likes

Redash Data Visualization Dashboard Tutorial With Cube.js

In this post, we'll learn how to build an analytics dashboard using a Cube.js backend and Redash.

May 23, 2019

by Timur Minulin

· 11,832 Views · 1 Like

Format Data Into GeoJSON With JavaScript to Be Used With HERE XYZ

In this tutorial, we're going to see how to take ordinary location data and parse it into GeoJSON using JavaScript.

May 23, 2019

by Nic Raboy

· 9,416 Views · 2 Likes

Streaming ML Pipeline for Sentiment Analysis Using Apache APIs: Kafka, Spark, and Drill (Part 2)

Look at an overview of streaming concepts and learn how to ingest Kafka Events with Spark Structured Streaming and enrich events with a machine learning model.

May 22, 2019

by Carol McDonald

· 21,339 Views · 12 Likes

Performance Testing AWS Deployments

Using a multitude of components to test the infrastructure at every level, check out how this testing stack can monitor AWS performance.

Updated May 22, 2019

by Shreyas Chaudhari

· 13,728 Views · 7 Likes

Why Do We Need the Volatile Keyword?

Find out the answer, and learn how using a volatile keyword can significantly reduce read time.

Updated May 22, 2019

by Thomas Krieger

· 11,523 Views · 9 Likes

Knowledge Graphs Are the New Black. The Year of the Graph Newsletter: May 2019

This news article gives a lot of information on knowledge graphs.

Updated May 22, 2019

by George Anadiotis

· 17,482 Views · 5 Likes

Building Data Visualizations With Angular and Ngx-charts

In this post, we learn how to make interesting data visualizations with Angular in order to report the findings of our data analysis work.

May 21, 2019

by Swathi Prasad

· 48,797 Views · 2 Likes

Create an Array of Numbers in DataWeave

Learn how to create an array of numbers in DataWeave.

Updated May 21, 2019

by Bharath Mandava

· 27,114 Views · 3 Likes

What Data Analysis Tools Should I Learn to Start a Career as a Data Analyst?

If you're looking to switch careers and get into the data analysis game, read on for a quick overview of the tools and skills you'll need.

May 21, 2019

by Lewis Chou

· 24,931 Views · 10 Likes

Sentinel and Spring Cloud: Building a Better Microservice Ecosystem

We take a look at the history of and use cases for this open source microservices framework developed by the team at Alibaba.

May 21, 2019

by Leona Zhang

· 7,567 Views · 2 Likes

Encryption, Part 3: Hybrid Encryption

Looking for the best of both worlds when it comes to symmetric and public/private key encryption?

May 21, 2019

by Bipin Patwardhan

· 15,845 Views · 1 Like

Open source technologies make it easier and more effective to share and reuse code between microservices. Learn how to get started in this tutorial.

Updated May 20, 2019

by Joni Sar

· 139,677 Views · 15 Likes

Top 30 SQL Interview Questions and Answers

Explore thirty interview questions and answers about SQL.

Updated May 20, 2019

by Mahesh Sharma

· 34,975 Views · 9 Likes

Microservice Configuration: Spring Cloud Config Server Tutorial

In this post, we build out a sample microservices application with Spring and create a configuration server for it.

Updated May 17, 2019

by Brian Hannaway

· 72,425 Views · 19 Likes

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