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Programming Leftovers

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  • LLVM 12.0 Released With Alder Lake + Sapphire Rapids Support, More C++20 - Phoronix

    After the release cycle dragged on an extra month due to blocker bugs, LLVM 12 was officially tagged on Wednesday night as the latest half-year update to this open-source compiler stack.

    LLVM 12 is a big feature release with support for x86-64 micro-architecture feature levels (matching the behavior of the GNU/GCC toolchain), adds support for Intel Alder Lake and Sapphire Rapids processors, provides initial support for AMD Zen 3 with "znver3" (though further tuning is still to land), continued work around C++20, POWER optimizations, Clangd is enjoying lower memory use, continued AMDGPU back-end improvements, and much more.

  • Fail fast with Opossum circuit breaker in Node.js

    The microservices pattern is pretty standard for today’s software architecture. Microservices let you break up your application into small chunks and avoid having one giant monolith. The only problem is that if one of these services fails, it could have a cascading effect on your whole architecture.

    Luckily, there is another pattern that can help with this issue: The circuit breaker pattern.

    This article explains what a circuit breaker is and how to use the pattern in your Node.js applications. We’ll use Opossum, a Node.js implementation of the circuit breaker pattern.

  • Sujeevan Vijayakumaran: One year at GitLab: 7 things which I didn't expect to learn

    One year ago I joined GitLab as a Solution Architect. In this blog post I do not want to focus on my role, my daily work or anything all remote pandemic related. Also, there won’t be a huge focus in regard to all remote working. I rather want to focus on my personal experiences in regard to the work culture. I’ll focus on things which I certainly did not think about before I joined GitLab (or any other company before).

    Before joining GitLab I worked for four German companies. As a German with a Sri-Lankan Tamil heritage I was always a minority at work. Most of the time it wasn’t an issue. At least that’s what I thought. At all those previous companies there were mostly white male and with very few (or even none) non-males especially in technical and leading roles. Nowadays, I realize what a huge difference a globally distributed company makes with people from different countries, cultures, background and gender.

    There were sooo many small things which makes a difference and which opened my eyes.

  • Rethinking DevOps: What is it all About?

    Ever since I started working with diverse web-apps at Linux Handbook and High On Cloud, the DevOps term has grabbed my attention many a time since that is something we specifically cover at Linux Handbook.

    We've covered tutorials on many tools related to DevOps but we've never really tried to explore the actual concept in depth. Since Linux Handbook is dedicated to Linux Servers, we also need to explore their important role in the DevOps field.

    But before we do so, it is essential to understand what DevOps really is. DevOps is an extremely popular buzzword and you will find multiple definitions of it across the web. But based on my own experiences, I have arrived at the following conclusive definition and thoughts henceforth. This is an attempt to revisit existing DevOps norms and rethink them in the form of a new model that I propose here.

  • How the RESTful API Became a Gateway to the World

    We're all connected these days, and our giddy, sped-up world calls on computer programs to make these connections. More and more information sites boast, "We have an API" to permit consumption of data by remote computer programs. The sites’ owners understand that it's not enough to publish a document that humans can peruse. Sites must join their data with the vast computer processing infrastructure that spans Planet Earth—and beyond.

    Nowadays, when somebody says, "We have an API," they're talking about REST. Microservices—one of the most popular architectures for new applications—also communicate using REST. Many sites are moving to GraphQL, which uses many of the same concepts and tools as REST. So technological innovation continues on the web, but the invention of REST in particular was a historic turning point.

    The term REST was invented by Roy T. Fielding in a famous 2000 PhD dissertation, and stands for Representational State Transfer. In this article, I'll explain why previous attempts to create a universal data processing infrastructure failed, and what made today's REST-connected world possible.

  • Enrique Ocaña González: GStreamer WebKit debugging tricks using GDB (1/2)

    I’ve been developing and debugging desktop and mobile applications on embedded devices over the last decade or so. The main part of this period I’ve been focused on the multimedia side of the WebKit ports using GStreamer, an area that is a mix of C (glib, GObject and GStreamer) and C++ (WebKit).

    Over these years I’ve had to work on ARM embedded devices (mobile phones, set-top-boxes, Raspberry Pi using buildroot) where most of the environment aids and tools we take for granted on a regular x86 Linux desktop just aren’t available. In these situations you have to be imaginative and find your own way to get the work done and debug the issues you find in along the way.

    I’ve been writing down the most interesting tricks I’ve found in this journey and I’m sharing them with you in a series of 7 blog posts, one per week. Most of them aren’t mine, and the ones I learnt in the begining of my career can even seem a bit naive, but I find them worth to share anyway. I hope you find them as useful as I do.

  • Microsoft Gets into the OpenJDK Business: What Does it Mean for You? [Ed: Microsoft is attacking Java again; see in context what Microsoft itself said about this strategy]

    Microsoft is getting involved with Java again. They are going to provide OpenJDK builds.

  • This Week in Rust 386
  • Raku multiple dispatch with the new MoarVM dispatcher

    I recently wrote about the new MoarVM dispatch mechanism, and in that post noted that I still had a good bit of Raku’s multiple dispatch semantics left to implement in terms of it. Since then, I’ve made a decent amount of progress in that direction. This post contains an overview of the approach taken, and some very rough performance measurements.

  • Why some developers are avoiding app store headaches by going web-only

    Aboukhadijeh says that Wormhole has a long list of reasons for skipping mobile app stores, including the ease of developing for the web and the lack of platform gatekeepers to worry about. But for him, targeting the web is also just a matter of principle.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

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.