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Cake day: June 13th, 2023

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  • I once taught private lessons in math on calculating the area of a circle and I wanted to show the students how much cheaper per area a larger pizza is. So we of course got the diameters of pizzas from their favorite restaurant and started calculating. Then we found out that the normal sized pizza was actually the cheapest per area. It wasn‘t quite what we expected, but a very good math lesson for the attendees nonetheless: The owner lost money, because they were bad at maths.


  • Growth has always been the biggest stopper for reducing environmental impact. Unfortunately there are a lot of countries which still want/need to grow their economy in order to have similar living standards as in Europe or North America. What Amazon demonstrated here is that it is possible to do this growth (9%) without increasing the carbon footprint (-0.4%). This unfortunately is not what everyone wants to read (including myself), but it is bitter truth of our global economy. (I know that this is a oversimplification and our planet does not care)

    What’s debatable is that they don’t count the environmental impact of other companies products and their clients. I would argue it is more sensible to criticize these companies directly and may be let Amazon force them to publish the environmental impact on the product page. Of course if Amazon would care more about the environment than their bottom line they would act differently, but I don’t believe that…

    Whats the worst is that they are destroying perfectly fine products. This is unacceptable and should be forbidden by law. Additionally they should get sued by the government for doing this thinking it was okay.




  • julianwgs@discuss.tchncs.detoSelfhosted@lemmy.worldCost-cutting tips?
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    9 months ago
    • Use sqlite instead of Postgres, MariaDB
    • Avoid enterprise software (Kubernetes, Elastic Search)
    • Only use projects with efficient programming languages such as Go, Rust, etc.
    • Try to run things bare metal
    • Lookout for projects which name themself minimal or light-weight

    I use a Raspberry Pi 2 to self host a Dashboard written in Rust (Axum), a RSS reader called yarr and a music streaming server Navidrome. The latter two are written in Go and very resource efficient. The electricity bill should be under a Euro a month (6.4W max power consumption).


  • I‘ve recently started using Tailscale for my home setup and I really can‘t recommend it enough. In my opinion it takes a lot of the dangers regarding IT security out of self hosting. Depending on who you ask it is not true self hosting, but I couldn’t care less :)

    With Tailscale you can create a VPN for your devices including your phone and even expose services to the outside world with SSL already setup (havent tried that out, yet)

    They have guides/tutorials for a lot of stuff (web server, Minecraft).


  • Free software is not about free of charge, but about freedom. If you publish open source software under a license which allows commercial use or selling the software, you have given consent. If you don‘t like that, change the license. (Users will still be able to use the software for free if they choose to compile it themself, because the source code is available.

    Redhat does exactly what you are describing: Packageing open source software into a paid Linux distribution and I would say they had an immense net positive effect on Linux doing this. I believe that this the point. Don‘t be an asshole. If you partly profit of someone else open source software, give them money, bug reports, bug fixes, recognition, etc. Be part of the community.




  • Not quite, it‘s only restricting competitors and so all companies and home labbers can still use it for free and contribute as in free speech.

    However this can bring a lot more financial sustainability to a project. I don‘t know the specifics, but the main problem is that companies make profit of the software, but don’t invest enough money back into the product. This cannot be good for users. Open source must be financially stable.

    Also right now all those competitors (and users) can create a fork and maintain it. So it is up to the community what will happen to the project.