Aelia Vita, Author at aster.cloud

6 min

Learn Expect By Writing And Automating A Simple Game

Code a “guess the number” game in Expect. Then, learn the real power of Expect with a separate script to automate playing the game. While trying to automate my workflow, I hit upon a configuration utility that defied meaningful automation. It was a Java process that didn’t support a silent installer, or support stdin, and had an inconsistent set of prompts. Ansible’s expect module was inadequate for this task. But I found that the expect command was just the tool for the job. My journey to learn Expect meant learning a bit of Tcl. Now that I have the background to create simple programs, I can better…

2 min

Why Developers Choose Open Source In The Hybrid Cloud

Open source technology provides greater flexibility in hybrid and multi-cloud environments so that developers can focus on what’s most important—building with greater speed and innovation, all while using a tool they enjoy. The biggest barrier to growth and innovation is a stagnant data platform. Legacy proprietary systems aren’t technically viable for most enterprises anymore. The enhanced capabilities of adopting a cloud-centric, open source approach to database management systems are critical to thriving in today’s business landscape. I expect to see fully managed databases in the cloud, known as Database as a Service (DBaaS), become the standard in the next few…

4 min

Tiny Snippets Of Code That Changed The World

Only a few short lines can have a massive, global impact. In 1997, Ethan Zuckerman broke the Internet — by inventing the pop-up ad. He was working for Tripod.com, an online service that let people make little web pages for free. To make money, Tripod sold ads that ran alongside the pages. The problem was, ads would wind up running next to racy content — a user’s page devoted to anal sex, say — and advertisers did not like this. Zuckerman’s boss asked him to figure out some solution. Wasn’t there some way to position the ads so they weren’t right next…

8 min

How To Migrate Your Code From PHP 7.4 to 8.1

With the recent end-of-life for PHP 7.4, it’s time to migrate your code. Here are a few options to do that. The end-of-life (EOL) for PHP 7.4 was Monday, November 28, 2022. If you’re like me, that date snuck up much faster than anticipated. While your PHP 7.4 code isn’t going to immediately stop working, you do need to begin making plans for the future of this codebase. What are your options? You could continue to remain on PHP 7.4, but there are several benefits to updating. The biggest are security risk and support. As we move farther and farther away from the…

4 min

What You Need To Know About Compiling Code

Use this handy mousetrap analogy to understand compiling code. Then download our new eBook, An open source developer’s guide to building applications. Source code must be compiled in order to run, and in open source software everyone has access to source code. Whether you’ve written code yourself and you want to compile and run it, or whether you’ve downloaded somebody’s project to try it out, it’s useful to know how to process source code through a compiler, and also what exactly a compiler does with all that code. Build a better mousetrap We don’t usually think of a mousetrap as…

4 min

The Influence Of Crypto Companies On The Fintech Industry Increases

Rising cryptocurrency value causes a tectonic shift in the banking sector. There is little doubt that the term “fintech” is acquiring a whole new meaning with the advent of bitcoin, cryptocurrencies, and blockchain technology. The blockchain industry is anticipated to increase from $7.18 billion in 2022 to $67.4 billion by 2026, with the majority of the growth coming from the United States. The widespread usage of blockchain technology has made smart contracts and digital identities accessible, which, together with a rise in venture capital financing and investments, is a major driver in the market’s fast development. By 2027, the report…

4 min

New European Union Cybersecurity Proposal Takes Aim At Cybercrime

The European Union is advancing legislation to strengthen security requirements for all digital hardware and software products. The proposal aims to curb cybercrime, which cost the global economy an estimated €5.5 trillion in 2021. Many personal devices that are connected to the internet are particularly vulnerable to hacks. Lawmakers are seeking to strengthen cybersecurity requirements across the European Union, advancing new legislation to bolster security requirements for all digital hardware and software products. The proposed law, titled the Cyber Resilience Act, would cover everything from computers and mobile phones to smart kitchen appliances and digital children’s toys. “When it comes…

8 min

Advanced Topic Modeling Tutorial: How to Use SVD & NMF in Python

In the context of Natural Language Processing (NLP), topic modeling is an unsupervised learning problem whose goal is to find abstract topics in a collection of documents. Topic Modeling answers the question: “Given a text corpus of many documents, can we find the abstract topics that the text is talking about?” In this tutorial, you’ll: Learn about two powerful matrix factorization techniques – Singular Value Decomposition (SVD) and Non-negative Matrix Factorization (NMF) Use them to find topics in a collection of documents By the end of this tutorial, you’ll be able to build your own topic models to find topics in any piece of text.📚📑 Let’s…

11 min

How To Build A Dynamic Distributed Database With DistSQL

Take a look at a data sharding scenario in which DistSQL’s flexibility allows you to create a distributed database. Distributed databases are common for many reasons. They increase reliability, redundancy, and performance. Apache ShardingSphere is an open source framework that enables you to transform any database into a distributed database. Since the release of ShardingSphere 5.0.0, DistSQL (Distributed SQL) has provided dynamic management for the ShardingSphere ecosystem. In this article, I demonstrate a data sharding scenario in which DistSQL’s flexibility allows you to create a distributed database. At the same time, I show some syntax sugar to simplify operating procedures,…

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