Coding Resources

Cool SQL Optimizations That Do Not Depend on the Cost Model (Part 2)

Learn about five (more!) simple optimizations that can be implemented purely based on metadata (i.e. constraints) and the query itself.

October 1, 2017

by Lukas Eder

· 4,773 Views · 6 Likes

Reading Nested Parquet File in Scala and Exporting to CSV

In this brief, yet code-heavy tutorial, learn how to handle nested Parquet compressed content and remove certain columns of your data.

September 30, 2017

by Avkash Chauhan

· 10,482 Views · 3 Likes

Weak, Soft, and Phantom References in Java (and Why They Matter)

This breakdown of weak, soft, and phantom references explains how they impact GC and memory allocation as well as some ideal use cases.

September 30, 2017

by Uberto Barbini

· 84,689 Views · 36 Likes

Building a Realtime Chat App With Django and Fanout Cloud

In this tutorial, we show you how to create a web-based, communication application using these two free platforms. Read on for more!

September 30, 2017

by Justin Karneges

· 18,459 Views · 4 Likes

Recover Deleted Data From SQL Table Using Transaction Log and LSNs

As the SQL Server database is a highly popular relational DBMS among corporate sectors and businesses, the issue of data loss is critical.

September 29, 2017

by Prashanth Jayaram

· 224,218 Views · 3 Likes

Automating REST Acceptance Tests

In this article, we take a look at automating acceptance tests, using Cucumber, Gherkin, and Java as our main technologies.

September 29, 2017

by Justin Albano

CORE

· 19,488 Views · 8 Likes

Cool SQL Optimizations That Do Not Depend on the Cost Model (Part 1)

Learn about five simple optimizations that can be implemented purely based on metadata (i.e. constraints) and the query itself.

September 29, 2017

by Lukas Eder

· 4,986 Views · 4 Likes

Cloud-Agnostic Object Storage for Everybody!

See how you can use Minio and Cloud 66 to handle production-grade object storage without worrying about cloud vendor lock-in.

September 29, 2017

by Daniël van Gils

· 7,019 Views · 1 Like

Visualizing H2O GBM and Random Forest MOJO Models Trees in Python

In this code-heavy tutorial, learn how to use the H2O machine library to build a decision tree model and save that model as MOJO.

September 29, 2017

by Avkash Chauhan

· 16,136 Views · 4 Likes

Lightweight JVM Diagnostics Tools and Containers

Here are the challenges with running JVM diagnostics on containerized apps and how you can get around them to get good performance data.

September 29, 2017

by Sasha Goldshtein

· 12,333 Views · 4 Likes

Aggregate Millions of Database Rows in a Spring Controller

Learn how to perform ultra-fast aggregations in Java with Spring and Speedment—even with large datasets with millions of rows.

September 28, 2017

by Emil Forslund

· 34,302 Views · 15 Likes

Creating Test Cases Using Script Mode With Katalon Studio

This tutorial will show you how to programmatically write automated test cases in script view in Katalon Studio, using Java and Groovy.

September 28, 2017

by Oliver Howard

· 10,852 Views · 10 Likes

How to Ensure the Security of Your APIs

Learn how to implement security measures for your APIs by following the steps in this detailed tutorial on defining a custom OAuth2.0 security scheme.

September 28, 2017

by Nagarjunareddy K

· 28,956 Views · 2 Likes

Benchmarking Google Cloud Spanner, CockroachDB, and NuoDB

Take a deep dive into three elastic SQL databases, all of which are pretty promising options that meet the needs of the modern data center.

September 28, 2017

by Boris Bulanov

· 12,039 Views · 4 Likes

User, Sys and Real Times in GC Log

You can never know too much about Garbage Collection in Java. Here are breakdowns of what user, sys, and real time means in your GC log.

September 28, 2017

by Grzegorz Mirek

· 15,257 Views · 16 Likes

Apache Flink vs. Apache Spark

Should you switch to Apache Flink? Should you stick with Apache Spark for a while? Or is Apache Flink just a new gimmick? Get the answers to these and other questions.

September 26, 2017

by Ivan Mushketyk

· 54,797 Views · 15 Likes

Lambdas and Clean Code

As with the introduction of any new tool, Java 8's lambda expressions have led to odd biases and poor use. Here are some considerations to keep your code clean.

September 26, 2017

by Nicolas Fränkel

· 34,106 Views · 109 Likes

Understanding API Design

This in-depth guide to API design will help you understand the types of APIs, their structure, and how to make calls and navigate them.

September 26, 2017

by Nagarjunareddy K

· 12,574 Views · 14 Likes

Developing a Basic Web Application Using Python

In this in-depth, code-heavy tutorial, learn how to use Python to create basic web apps. Once you know how to do this, you can make any web app to fit your needs!

September 26, 2017

by Arnny Y

· 117,548 Views · 8 Likes

Basic Example for Spark Structured Streaming and Kafka Integration

With the newest Kafka consumer API, there are notable differences in usage. Learn how to integrate Spark Structured Streaming and Kafka using this new API.

September 26, 2017

by Ayush Tiwari

· 64,483 Views · 17 Likes

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