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Cake day: June 11th, 2023

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  • An A record maps to an IP address. A CNAME record maps to another URL. Since you are trying to map to an IP address rather than a URL, you will want an A record.

    If all of your sites will be served from the same proxy server at 204.230.30.104, you can create a single, wildcard A record for *.newexample.com. This will point every subdomain to your proxy’s IP address. You don’t need to create an A record for each subdomain.

    If you are planning on serving some subdomains from 204.230.30.104 and other subdomains from another proxy at 69.4.20.187, you would need multiple A records for pointing the subdomains toward their respective proxies.

    If you wanted to serve from proxy running on a dynamic IP address, and you’re using a DDNS provider to point newexample.ddns.net back to your current IP address, you could use a CNAME record to point newexample.com to newexample.ddns.net.


  • Except for your first sentence, I would agree with you. Don’t hurt people directly though. Starting a war helps no one.

    You seem to be assuming I meant some sort of unlawful harm. My phrasing was quite deliberate: I advocated no specific actions whatsoever. You brought “hurt people” and “starting a war” into this conversation; not I.

    The choice of what actions to take is left to you; I am not involving myself in that decision. My advocacy is strictly limited to the choice of targets: Do not take direct action against ICE agents. They are merely a distraction from the problem class. Redirect any action you might choose to take against ICE to the people getting rich while the rest of us starve.

    I will raise one point:

    The point of protesting is to shame leaders into change.

    Our leaders are shameless. There is no point in trying to shame the shameless. The purpose of protesting must be something else. Otherwise, protesting is pointless.



  • Rivalarrival@lemmy.todaytoLemmy Shitpost@lemmy.worldImportant Announcement
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    12 days ago

    Whatever you want to do to an ICE agent, do instead to the people living in the biggest house you can find.

    ICE is in your neighborhood because the ruling class wants them in your neighborhood. The more you fight, the more they send to the fight. Don’t protest ICE in your own neighborhood. Protest ICE in a ruling-class neighborhood.



  • Modulo is much easier to understand with clocks.

    Suppose It is currently midnight. What time will it be in 3 hours? 3 mod 24 = 3. It will be 03:00

    What time will it be in 27 hours? 27 mod 24 = 3. We go through a whole day (24 hours) to get back to midnight, then continue another 3 hours, for a total of 27. The time will be 03:00.

    What time will it be 48 hours from now? 48 mod 24 = 0. 48 hours from midnight will be midnight.

    What time will it be 6 hours from now? 6 mod 24 = 6.

    Conceptually, X mod Y means that instead of 24 hours per day, we are splitting the day into Y “hours”, labeled 0 to Y-1. We start at 0, and pass through X “hours”. X mod Y is the “hour” we finish up in at the end. 5 mod 2 means we have a 2-hour day, with hours 0 and 1. We pass through 5 of those hours. When we finish, are we at hour 0 or hour 1?


  • There is another major advantage…

    There is a major problem with solar and wind. Daily and seasonal variation in solar flux and wind speed forces us to size our renewable generators based on their minimum expected output. We have to install enough solar panels that we can supply our needs with only low-angle sunlight on short, winter days. But we won’t do that, because that many solar panels are about four times what we need to supply our needs on long summer days. With that much oversupply on the grid, generators won’t be able to command sufficient revenue to justify that number of panels. But we need that number of panels to supply our winter demands.

    We can match a large percentage of daily variation with sufficient grid-scale storage. We fill up reservoirs with our excess mid-day production, and run that water through hydropower plants overnight. But it is simply not possible to expand storage sufficiently to match seasonal variation.

    If we build out sufficient solar generation capacity to meet winter demand, we don’t need seasonal storage. The problem we have becomes one of seasonal oversupply. The solution to that problem is an increase in demand. We need energy-intensive products that can be brought online in daylight hours from spring to autumn, then shut down for winter.

    Producing net carbon-zero fuels could very well create part of the demand needed to justify massive expansion of our renewable power grid.


  • Liquid fuels have a couple advantages in certain scenarios. Aircraft, for example. The energy density of liquid fuels is considerably higher than batteries. Aircraft only take on as much fuel as they need to safely reach their destination. They takeoff with more weight than they can safely land, burning off fuel weight throughout their flight until they are light enough to land. Dumping fuel overboard to get down to landing weight in an emergency.

    Switch these aircraft over to batteries, and their landing weight is the same as their takeoff weight. They carry the same “fuel” weight for a regional flight as they do for a maxinum-range flight.