About the Author
Lou Mauget

Lou Mauget

Known as Ed Mauget in civilian life. Lou is a name imposed by IBM in 1966. Newly infatuated with Microservices Architecture. Last spring I coded MockOla, a wire-framing tool for Keyhole Software. Have coded in Java since it was conceived. Also worked with C/C++. Current interests include microservices, Docker, Node JS, NoSQL databases, functional programming, single-page web applications ... any new software languages/frameworks.

Fiddling with RxJs Streams

Lou Mauget JavaScript, Technology Snapshot Leave a Comment

Egon: Don’t cross the streams. Peter: Why? Egon: It would be bad. – Ghostbusters (1984) In this post I’ll touch on the emergence of JavaScript reactive streams. We’ll look at a cool online interactive tool that is useful for checking behavior of stream operators. I’ll finish by showing six RxJs JSFiddle examples that you can run and modify. Background Rich …


Reinforcing The HTML5 Canvas With Fabric.js

Lou Mauget CSS & HTML, Design, Technology Snapshot Leave a Comment

This world is but a canvas to our imagination. -Henry David Thoreau Dynamic Web Graphics The past… Applets In the previous millennium, HTML markup had limited support for graphics. If we wanted dynamic graphics, or even a page that responded seamlessly to requests, we embedded a JavaScript VM in the page to host an Applet. Indeed, Applets were an original …

JavaScript Promises Are Cool

Lou Mauget JavaScript, Technology Snapshot 4 Comments

“And when I promise something, I never ever break that promise. Never.” ― Rapunzel Many languages have libraries of interesting schemes called promises, deferreds, or futures. Those help to tame the wild asynchronous into something more like the mundane sequential. JavaScript promises can promote separation of concerns in lieu of tightly coupled interfaces. This article is about JavaScript promises of …

MongoDB Geo-Spatial Mobile Demo

Lou Mauget Databases, Mobile 2 Comments

Mongo: noun (pl mongo or mongos) – a monetary unit of Mongolia. Equal to one hundredth of a tugrik. Origin from Mongolian “silver” I’ve written about NoSQL DBMS [https://keyholesoftware.com/2012/10/01/is-nosql-the-sql-sequel/]. We know that there are several categories of NoSQL DBMS. MongoDB is a scalable NoSQL document-oriented data store that has built-in geo-spatial indexing. Let’s look at its characteristics and then check …

Mapping Shortest Routes Using a Graph Database

Lou Mauget Databases, Java, Technology Snapshot 11 Comments

We often model interconnected data by cramming it in and out of table structures. Why don’t we simply model interconnected data as … interconnected data? I recently wrote that there are several kinds of NoSQL database stores: key-value, column family, document-oriented, and graph database.  This article targets Neo4j, a Java-based graph DBMS. The open-ended problem domain of graph databases includes …