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Programming Leftovers

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Development
  • Josef Strzibny: Preloading Rails applications in production

    When it’s time to take your application online, there are several decisions to make. Today I would like to talk about application preloading and explain why I prefer preloading applications in production.

    But first things first. What’s is preloading anyway?

    Preloading the application is a process of loading up all application files and dependencies to virtual memory. If it would be a game, this might be a difference between loading just first two levels of the game versus loading the game as a whole. What’s not loaded at first will be loaded later from the disk when required.

    The opposite of preloading is lazy loading. Lazy loading saves us some memory at first and as a side product makes the boot process faster which might be a decent optimization for large applications.

  • GCC 12 Merges Initial Support For RISC-V's Bitmanip Extensions - Phoronix

    Following the recent RISC-V Bitmanip work in Binutils, the GCC 12 compiler has now landed preliminary support for the RISC-V ISA's bit manipulation extension.

    RISC-V's Bitmanip is a collection of several component extensions intended to help cater the open-source processor ISA for better efficiency that can result in code size reduction, better performance, and reduced energy consumption.

  • Nibble Stew: A call for more downstream testing of Meson

    As Meson gets more and more popular, the number of regressions also grows. This is an unvoidable fact of life. To minimize this effort we publish release candidates before the actual releases. Unfortunately not many people use these so many issues are not found until after the release (as happened with 0.60.0).

    For this reason we'd like to ask more people to test these rcs on their systems. It's fairly straightforward.

    [...]

    If you have some different setup that has a full CI run (hopefully something smaller than a full Debian archive rebuild) then doing that with the rc version would be the best test.

  • Use Rust for embedded development

    Over the past several years, Rust has gained a passionate following among programmers. Tech trends come and go, so it can be difficult to separate excitement just because something is new versus excitement over the merits of a technology, but I think Rust is a truly well-designed language. It aims to help developers build reliable and efficient software, and it was designed for that purpose from the ground up. There are key features you'll hear about Rust, and in this article, I demonstrate that many of these features are exactly why Rust also happens to be great for embedded systems.

    [...]

    Using Rust for your embedded development gives you all the features of Rust without the need to sacrifice flexibility or stability.

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.