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Programming Leftovers

Submitted by Roy Schestowitz on Tuesday 27th of July 2021 04:16:49 PM Filed under
Development
  • Connecting Node.js applications to Red Hat OpenShift Streams with Service Binding

    Apache Kafka is a vital piece of infrastructure for teams adopting an event-driven architecture. By connecting applications with minimal coupling, event-driven architecture lets teams create distributed, fault-tolerant applications using the runtimes most appropriate for the specific task and team. However, managing infrastructure and Kafka clusters is a complex and time-consuming task. A managed Kafka service such as Red Hat OpenShift Streams for Apache Kafka allows teams to focus on delivering applications, while Red Hat takes care of their Kafka infrastructure.

    Once your Kafka infrastructure is in place, you'll want to start developing applications using your preferred runtimes. This article focuses on Node.js, which has become one of the most popular runtimes for cloud-native application development. Integrating Node.js applications with their organization's broader event-driven architecture based on Kafka is critical for developers.

    This article demonstrates how to connect and authenticate your Node.js applications to OpenShift Streams for Apache Kafka using the Service Binding Specification for Kubernetes. The Service Binding spec says that it "aims to create a Kubernetes-wide specification for communicating service secrets to applications in an automated way." Figure 1 shows a high-level overview of the interactions between the components in this specification. Don’t worry if you’re not yet familiar with these components or concepts; this article walks you through each step.

  • $2 MXCHIP EMC3080 WiFi and Bluetooth LE IoT module integrates Cortex-M33 MCU - CNX Software

    There are some discrepancies between the information on Seeed Studio and MXCHIP’s product page, notably with the former claiming Bluetooth 5.0 supports but I’d assume it would be without long-range nor higher bandwidth (2 Mbps) support in any cases.

    There aren’t any software development resources that I could find on either website, but the datasheet reads...

  • GitLab's New Open Source Tool Will Detect Malicious Code - It's FOSS News

    There are several open-source tools available for security researchers. Now, GitLab has introduced a new one to the arsenal that lets you detect malicious code in dependencies.

    The tool is also known as “Package Hunter” and is an important addition that could help secure every type of software.

  • Hotspot: How const Can Improve Performance

    Some time ago, I noticed that a unit test was quite slow, using 100% CPU for a number of seconds at one point in the test.

    I used perf and KDAB’s Hotspot to record and examine where the CPU cycles were spent in that unit test, and I quickly noticed that a lot of time was spent in QFileSystemEntry::fileName(), an internal method in Qt that’s called when listing directories with QDir.

  • Hacking is the opposite of marketing

    Building maximally general technology, and then adding a final layer of interface, marketing, and narrative that makes it all seem specific, is part of the challenge of making things people will buy.

  • Dirk Eddelbuettel: RcppFarmHash 0.0.1: New CRAN Package

    A new package RcppFarmHash is now on CRAN in an inaugural version 0.0.1.

    RcppFarmHash wraps the Google FarmHash family of hash functions (written by Geoff Pike and contributors) that are used for example by Google BigQuery for the FARM_FINGERPRINT.

    The package was prepared and uploaded yesterday afternoon, and to my surprise already on CRAN this (early) morning when I got up. So here is another #ThankYouCRAN for very smoothing operations.

  • Rust 1.54.0 pre-release testing

    The 1.54.0 pre-release is ready for testing. The release is scheduled for this Thursday, July 29th. Release notes can be found here.

»

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.

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