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Programming Leftovers

Submitted by Roy Schestowitz on Sunday 12th of December 2021 01:30:02 PM Filed under
Development
  • Intel Contributes A Number Of Vulkan Filters/Improvements To FFmpeg - Phoronix

    Aside from the separate work around experimental Vulkan Video decode support, thanks to Intel recently there have been a number of Vulkan improvements to the FFmpeg code around new accelerated filters.

    Last year saw early Vulkan support landing in FFmpeg and that has continued since for this widely-used multimedia library. Thanks to Intel engineers there have been some recent Vulkan additions in FFmpeg Git.

  • "Open Source" is Broken

    All software is made on top of the shoulders of giants. Consider something as basic as running an SSH server on the Linux kernel. In the mix you would have at least 10 vendors (assuming a minimal Alpine Linux system in its default configuration), which means that there are at least 10 separate organizations that still have bills to pay with actual money dollars regardless of the number of users of the software they are giving away for free. Alpine Linux is also a great example of this because it is used frequently in Docker contexts to power many, many companies in production. How many of those companies do you think fund the Alpine Linux project? How many of those companies do you think even would even THINK about funding the Alpine Linux project?

    I've had this kind of conversation with people before and I've gotten a surprising amount of resistance to the prospect of actually making sure that the random smattering of volunteers that LITERALLY MAKE THEIR COMPANY RUN are able to make rent. There is this culture of taking from open source without giving anything back. It is like the problems of the people who make the dependencies are irrelevant.

  • Advent of 2021, Day 10 – Working with data frames

    On the other hand, dataframe is organised dataset with named columns. It offers much better optimizations and computations and still resembles a typical table (as we know it from database world). Dataframes can be constructed from arrays or from matrices from variety of files, SQL tables, and datasets (RDDs). Dataframe API is available in all flavours: Java, Scala, R and Python and hence it’s popularity.

  • Branchless Git

    One Git usage pattern that I think is underused is the “branchless” workflow. The idea here is pretty intuitive if you’ve used trunk-based development: there’s just one “main” branch that everything gets merged into. No feature branches, no release branches, no hotfix branches.

    The “branchless” workflow is, in a nutshell: You work in a stack of atomic commits which are all eventually intended to be merged into a single trunk branch. Each commit can become a pull request, and each pull request consists of a single commit.

  • Raku Advent Calendar: Day 12: A long journey to Ethereum signatures

    The Ethereum blockchain is essentially a transaction-based state machine. We begin with a blank state, before any transactions have happened on the network, and move into some final state when transactions are executed. The state of Ethereum relies on past transactions. These transactions are grouped into blocks and each block is chained together with its parent.

    Transactions are processing by own Turing complete virtual machine – known as the Ethereum Virtual Machine (EVM). The EVM has its own language: EVM bytecode. Typically programmer writes the program in a higher-level language such as Solidity. Then the program should be compiled down to EVM bytecode and commited to the Ethereum network as the new transaction. The EVM executes the transaction recursively, computing the system state and the machine state.

    The EVM is included into the Ethereum node client software that verifies all transactions in each block, keeping the network secure and the data accurate. Many Ethereum clients exist, in a variety of programming languages such as Go, Rust, Java and others. They all follow a formal specification, it dictates how the Ethereum network and blockchain functions.

    In this article we will consider Geth as the basic Ethereum node software.

  • A (not so) simple matter of privacy

    You may have seen Ovid's recent post on his discussions with the Perl Steering Committee about moving forward with implementing an initial subset of the Corinna proposal in the Perl core.

    One of the issues that came up during those discussions was the best way to provide private methods in Corinna.

»

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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

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  • 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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