Roam Tec

In the world of web development, WebSocket connections between a Node.js server and a Vue.js client are becoming increasingly popular, thanks to their ability to facilitate real-time data communication. In this blog post, we'll explore the benefits of using WebSocket connections in a software as a service (SaaS) environment and discuss how to set up a connection for data fetching and integration with Vuex. Setting Up a WebSocket Connection for Data Fetching To establish a WebSocket connection for passing data from the server to the client, we utilized a Node.js server to poll an API. Instead of using setInterval, we opted for asynchronous polling to retrieve data from the data service. For this, we experimented with Lorem Picsum in Postman, ultimately deciding to use the 'got' library for handling requests. With code samples readily available, we were able to quickly set up the server to fetch and send images to the client via the WebSocket connection. Integrating S...

Augmented Random Search (ARS) is a powerful technique in the field of artificial intelligence that has been gaining attention due to its ability to train models efficiently, especially in benchmark tasks such as teaching an AI to walk. ARS has been shown to outperform Google Deep Mind and other models in this regard, being up to 100 times faster. In this blog post, we will discuss the intuition and practical aspects of the ARS algorithm, as well as its comparison with other AI techniques. Intuition Behind ARS The intuition behind ARS lies in its philosophical approach and the main concepts that govern its functioning. At the core of ARS is the method of finite differences, which enables the algorithm to learn and adapt quickly. ARS controls 22 degrees of freedom in the MuJoCo engine and constantly receives feedback from the input to control decisions. A perceptron, a fundamental element of ARS, is essentially one or more sums of weighted inputs. The weight matrix is adjusted afte...

As the internet continues to grow, the volume of user-generated content increases exponentially, making content moderation more crucial than ever. Ensuring a safe and respectful online environment requires a delicate balance between human expertise and automated systems. In this post, we will discuss the importance of combining human and machine moderation efforts, the benefits of this approach, and the challenges faced in finding the right balance. The Need for Content Moderation Content moderation is essential for maintaining a positive and safe online community. With millions of users posting content daily, it becomes increasingly difficult for platforms to monitor and manage user-generated content effectively. Inappropriate, offensive, or harmful content can have a detrimental impact on the user experience and can even lead to legal repercussions for the platform. Combining Human and Machine Moderation To tackle the challenges of content moderation, many platforms are turning...

For smart home enthusiasts, Home Assistant offers a powerful platform to manage and automate various devices. However, securing your Home Assistant instance and enabling remote access can be a daunting task. In this blog post, we will guide you through the process of setting up a DNS server, Nginx reverse proxy, and Letsencrypt to secure your Home Assistant and ensure SSL security. Getting Started: Setting Up a DNS Server The first step towards securing your Home Assistant instance is to set up a DNS server. This will allow you to use a custom domain name instead of relying on your router's NAT (Network Address Translation) functionality. Setting up a DNS server may seem complicated, but there are many online resources and tutorials available to help you through the process. Securing Home Assistant with SSL Once you have a DNS server in place, it's time to secure your Home Assistant instance with SSL. This can be achieved using Nginx reverse proxy and Letsencrypt. Nginx act...

Docker has become an essential tool for developers, enabling them to easily containerize and deploy applications with minimal configuration. In this blog post, we will walk you through the process of dockerizing a Vue client app and a Node server app on a Windows machine, detailing each step along the way. Setting up Docker on Windows Before getting started, ensure that Docker is preinstalled on your Windows machine. You may encounter an error related to Hyper-V not being enabled. To enable Hyper-V, follow these steps: 1. Open PowerShell and run the command:   Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V -All 2. Restart your machine for the changes to take effect. After enabling Hyper-V, start Docker and complete any updates if prompted. Once Docker is up and running, we can proceed with dockerizing the Vue and Node apps. Dockerizing the Vue Client App Our Vue client app will be served using an Nginx server. Begin by creating a Dockerfile in the app's r...

Continuous integration and continuous deployment (CI/CD) pipelines play a vital role in modern software development, enabling faster and more reliable delivery of applications. In this blog post, we will discuss our recent experience setting up a CI/CD pipeline on Redhat and Ubuntu machines and developing a Vue.js client app and Node.js server app. Additionally, we will explore the integration of AMCharts for enhanced data visualization. Setting Up a CI/CD Pipeline with Vagrant, Ansible, and Kubernetes We recently set up a CI/CD pipeline on Redhat and Ubuntu machines using Oracle VM VirtualBoxes with Vagrant and Ansible. To manage load balancing and monitoring, we integrated Istio, providing services like Prometheus DB, Grafana, Kiali, and Jaeger. Our Jenkins CD setup allowed an app with a self-signed certificate to run on a Kubernetes cluster and a browser IDE. Both were accessible through a domain that redirected to the server's public IP. Following this successful s...