Language Resources

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

· 10,025 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

· 82,209 Views · 36 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

· 222,144 Views · 3 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

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

· 14,849 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

· 11,714 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

· 33,465 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

· 10,313 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

· 26,960 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

· 10,520 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

· 14,051 Views · 14 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

CORE

· 33,612 Views · 108 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

· 116,687 Views · 8 Likes

Migrating Your Project to Jigsaw Step by Step

Want to dive into Java 9's modularity? Here's a step-by-step guide to moving your project to take advantage of Jigsaw's features.

September 26, 2017

by Lukas Krecan

· 27,185 Views · 24 Likes

Saving Data to CSV Files With Java Through JMeter

Wish you could complete your entire CSV file process in one place? Let's see how you can create and update CSVs through JMeter.

September 25, 2017

by Michal Borenstein

· 24,441 Views · 2 Likes

Parsing HTML: Selecting the Right Library (Part 2)

With Java out of the way, now we compare two C# libraries designed for parsing HTML, considering their strengths and weaknesses.

Updated September 25, 2017

by Gabriele Tomassetti

· 9,894 Views · 6 Likes

Getting the Most Out of the Java Thread Pool

Dive into the inner workings of thread pooling in Java, the various thread pools at your disposal, and tips on how to make your programs more performant.

September 23, 2017

by Eugen Paraschiv

· 53,798 Views · 33 Likes

Java 9: It's Heeeere

Java 9 has finally arrived. With new features like a modular JVM and REPL in the form of JShell, here's a list of links to get you started.

September 22, 2017

by Mike Gates

· 10,018 Views · 13 Likes

Creating a REST Web Service With Java and Spring (Part 2)

Welcome back! We pick up where we left off, and show you how to implement the data source and domain layers of your REST web service.

September 22, 2017

by Justin Albano

CORE

· 80,334 Views · 28 Likes

Enum: Using the Name() and toString() Methods Correctly

With Java Enums, there are two similar, but different methods that are commonly used: name() and toString(). Learn the difference and when to use both for best results.

September 21, 2017

by Alex Theedom

· 215,814 Views · 12 Likes

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