InfoQ Homepage Development Content on InfoQ
-
/articles/apache-spark-graphx/en/smallimage/big-data-spark-1530723071452.jpg)
Big Data Processing Using Apache Spark - Part 6: Graph Data Analytics with Spark GraphX
In this article, author Srini Penchikala discusses Apache Spark GraphX library used for graph data processing and analytics. The article includes sample code for graph algorithms like PageRank, Connected Components and Triangle Counting.
-
/articles/Troubleshooting-Java-Memory-Issues/en/smallimage/logo-java.jpg)
Troubleshooting Memory Issues in Java Applications
Troubleshooting Java memory problems can be tricky, but the right approach and proper tools can simplify things substantially. The JVM reports a variety of OutOfMemoryError messages. In this article we address how to read them, and we take a look at a wide range of tools we can use to eradicate them.
-
/articles/transcrypt-python-javascript-compiler/en/smallimage/GettyImages-499691816-copy.jpeg)
Transcrypt: Anatomy of a Python to JavaScript Compiler
On the web front end, web development is one size fits all: JavaScript. The Transcrypt Python to JavaScript compiler is a relatively new open source project, aiming at executing Python 3.6 at JavaScript speed, with comparable file sizes. In this article, Jacques de Hooge talks about the requirements in building a transpiler and how Transcrypt is built to meet those demands.
-
/articles/paypal-api-first-part3/en/smallimage/logo-api2.jpeg)
Untangling an API-First Transformation at Scale. Lessons Learnt at PayPal – Part 3
This is the third in a three-part series that explores how PayPal has adopted a more API-first approach to building platform services. In this article, we’ll take a closer look at the program aspects and some of the execution and operational challenges that had to be overcome.
-
/articles/Testing-RxJava2/en/smallimage/TestingRxJava-logo.jpg)
Testing RxJava2
You are ready to explore reactive opportunities in your code but you are wondering how to test out the reactive idiom in your codebase. In this article Java Champion Andres Almiray provides techniques and tools for testing RxJava2.
-
/articles/smoothing-human-trajectory-streams/en/smallimage/logo-mobile.jpeg)
Processing Streaming Human Trajectories with WSO2 CEP
Extracting useful information from an inaccurate data stream is a significant issue in data stream processing for IoT applications. This article describes the use of Kalman filters to smooth human trajectory information gathered from an iBeacon sensor network and demonstrates its effectiveness. The solution has been built with WSO2 CEP, a complex event processing middleware.
-
/articles/paypal-api-first-part2/en/smallimage/logo.jpeg)
Untangling an API-first Transformation at Scale. Lessons Learnt at PayPal – Part 2
This is the second in a three-part series that explores how PayPal has adopted a more API-first approach to building platform services. In this article, we’ll take a closer look at how the portfolio of API’s themselves are managed.
-
/articles/stackify-prefix-retrace/en/smallimage/logo1.jpeg)
Introducing Prefix and Retrace : Interview with Stackify's Founder Matt Watson
Stackify was founded in 2012, making it a relatively new player in the field of Application Performance Management (APM) and code profilers. InfoQ reached out to Matt Watson, founder and CEO of Stackify, to learn more about its products Prefix and Retrace.
-
/articles/Deterministic-Execution-JVM/en/smallimage/logo-java.jpeg)
Deterministic Execution on the JVM
For many use cases (for example cryptocurrency ledgers), we need to ensure that any action will execute deterministically and terminate. In this article, Ben Evans reviews the theory behind the WhitelistClassLoader.
-
/articles/enterprise-java-opinion/en/smallimage/logo-java.jpeg)
The Future of Java in the Enterprise - InfoQ’s Opinion
As part of ongoing work to review InfoQ’s editorial focus for the next year, we’ve been looking at the Java landscape in some detail. This article summarises our view of Java's role in the enterprise
-
/articles/angular-wish-list/en/smallimage/GettyImages-173872898-copy.jpeg)
An Angular Wish List
Angular is an excellent, full-featured JavaScript platform, but a stagnant framework is a dead framework. New features enhance functionality and provide new opportunities for developers to build wonderful apps. In this article, Eamon O'Tuathail makes suggestions on how to expand Angular's reach into new, exciting ways.
-
/articles/paypal-api-first-part1/en/smallimage/logo-api.jpeg)
Untangling an API-First Transformation at Scale. Lessons Learnt at PayPal – Part 1
In the first of three articles, Erik Hogan describes how PayPal went from a monolithic, siloed architecture to a much more loosely coupled set of over 150 services with well designed, modern APIs over the course of three years.