Category Archives: Technology

Using Duration in Typescript

I’m converting Java 8 code to Typescript. Java 8 introduced a great Duration class that uses ChronoUnit to specify units such as DAYS or HOURS. You then instantiate a duration using that: Duration.of(3, SECONDS); Duration.of(465, HOURS); Duration can then interact … Continue reading

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Using FirewallD as a Linux Router

There are already blogs out there on how to use FirewallD as a router. In general, you enable masquerade. However, I could not find any that mentioned how to do it if you have public static IPs. Prior to using … Continue reading

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Creating a new Angular Site on Google Firebase

Angular is a framework for creating front-ends for websites. Technically, the site is static from a web hosting perspective, meaning that in and of itself it does not have a database, but rather only serves static files from the web … Continue reading

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Using JSONP in Angular 8

JSONP is one way to get around CORS when getting data from a REST service. It does require a callback feature on the part of the service, which isn’t readily clear in some of the blogs and samples online for … Continue reading

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Testing Galera in Kubernetes

I deployed a 3 node Galera cluster in Kubernetes. Galera clusters MariaDB or MySQL, allowing you to read and write to all nodes while always being consistent (ACID) at all times. Kubernetes is a deployment environment for container applications.  Here … Continue reading

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Added Charting to Automated Trading System

This is a continuation of Developing an Automated Trading System.  Many of us use very robust charting software, including the popular thinkorswim platform, that does more than I plan to create in my system.  The requirement I ran into that … Continue reading

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Created Backtesting of Signals and Algos

This is a continuation of Developing an Automated Trading System.  Began algorithms with simple strategies.  This tests a range of inputs for a strategy. For example, you can test a range of trailing stops from 1 to 15% with 0.5% … Continue reading

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Developing an Automated Trading System

It has been my dream since I was a kid and I saw the Matthew Broderick movie War Games in a theater in 1983 to build an automated trading system using AI.   This year I have begun to live that … Continue reading

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Internet Relay Chat (IRC) and the Berlin Wall Falling

This is the story of using the IRC when it first came out, long before most people heard of the Internet. Connecting Through College In the late 80s, when I was in college, I created an account on the school’s … Continue reading

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How can Javascript access hardware on Android?

While the Apache Cordova project is providing a cross-platform and plug-in solution to deploying web applications as native mobile apps on Android, iPhones and Windows while giving you access to the hardware such as the camera, GPS and storage via … Continue reading

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