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Category Archives: Technology
Principles of Communications when Developing Messaging Applications
This is an intro on the challenges and options to overcome while developing applications involving digital communications, particularly real-time. There are many streaming communication protocol options to choose from, including regular socket communications, WebSockets, MQTT and a Vert.x event bus. … Continue reading
Posted in Java, Technology, Typescript, Uncategorized
Tagged mqtt, vertx, WebSockets
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Owning your contacts, calendar and tasks
Tech Freedom Series Owning your data is not just having control over it. It means you don’t have to share it with anyone you don’t want to, including large corporations. Yet, you should be able to share it with all … Continue reading
Being free of Big Tech
Tech Freedom Series There are many things you can do to be free of big tech while having very capable mobile devices and home computers. You should own your data and you should not have to share it with or … Continue reading
The New Stacks Open Development Community
participants continue to share the belief that they ‘can do more in concert than individually’ — OpenSource.com I propose developers in the Stacks blockchain ecosystem join together in one identity — The Open Development Community. Our primary objective is to … Continue reading
Posted in Crypto, dApps, Development, Technology, Web
Tagged community, crypto, stacks
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Stacks Blockchain API Architecture – WebSocket message flow
This discusses the architecture behind a critical piece for Stacks decentralized apps (dApps) developers: the flow of data from the Stacks Node where the block chain is constructed to the WebSockets service provided in the Stacks Blockchain API. dApps can … Continue reading
Posted in Crypto, dApps, Development, Technology, Typescript
Tagged blockchain, stacks
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Simplifying WebSockets User Interface (UI) Clients with Happy Pub/Sub Patterns
A back-end WebSocket for live streaming data can typically offer subscriptions to data. Your client UI will typically have one connection to your back-end for all your subscriptions. The challenge becomes how to you handle many components in your UI … Continue reading
Learning the Stacks SDK/API – The Demo Client
Stacks has a RESTful API and a library called Stacks.js. Stacks.js is a set of libraries for Typescript clients “which provide everything you need to work with the Stacks blockchain.” To develop a better understanding, I created a web client, a … Continue reading
Mapping Vue 3 Pages to Firebase Hosting
Vue 3 has a concept called pages that let’s you define different HTML pages acting as entry points to your app. You define these in vue.config.js in the root of your project. Here is a sample: module.exports = { pages: … Continue reading
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
Posted in Angular, Development, Technology, Typescript
Tagged angular, coding, development, duration, typescript
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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
Posted in Networking, Technology, Technology Services
Tagged centos, firewall, firewalld, internet, linux, networking, router
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