lucideng

it's past someone's bedtime!

This is an amazing read, really helped me understand k8s networking better. 10/10.

No, it would not. You are implying that 'modern' is inherently good.

For security (or anything else really), you can ask the LLMs to implement those features, but it is up to you to verify that they are implemented correctly. The OWASP Top 10 are a good place to start.

Don't just trust it. I've done websites as sample projects to work with LLMs to understand them better.... and while sometimes brilliant, they can miss really obvious things. One time it did user login but never actually verified the password set for a user login.

Treat it like an intern/assistant, not a magical thing that does work for you. While sometimes brilliant, they can miss obvious things, especially if you don't hold its hand. Verify, verify, verify.

These kinds of posts are what HN is all about.

This quote feels more relevant than ever:

Give a man a fish, and you feed him for a day. Teach a man to fish, and you feed him for a lifetime.

Or in the context of AI:

Give a man code, and you help him for a day. Teach a man to code, and you help him for a lifetime.

As the son of a mechanic, I was explicitly barred from becoming a mechanic. The hours can be long, but they are more inconsistent than anything. In the summer it's hot and even hotter under engine bays, in the winter it's cold and melting snow/ice cause constant drips from cars.

The physical demands are real, you will likely have back/neck problems from leaning into engine bays, looking up constantly, contorting your body to get at a bolt or connector.

You are constantly exposed to toxic fumes and chemicals in the air and on your skin. You will be burned from hot exhaust, cut open on dirty rusted metal, bruised from impacts or falling objects, hearing loss from air lines hissing, air tools and hammering on parts. Those are the lucky ones... unlucky ones get eye injuries (even with 'safety' glasses), severe burns or cuts and broken bones from crushing injuries or even death from a variety of sources.

The pay structure promotes cutting corners and speed. You are paid X hours for a task even if it takes you X*2 (oh no!) or X/2 (oh yeah!) hours. You don't get extra time and pay to clean dirt and mud from an area to prevent contamination or just do a good job in general.

Vehicles are generally designed to be easy to assemble, not repair. This is why a mechanic may spend 5 minutes cutting a hole in a plastic fender well to access a bolt and plug the hole afterwards. That bolt is easily accessible when the engine is removed, but dropping an engine (they come out the bottom easier) can take 2 hours. With a shop rate of $100/hr+, you'll want the quick hacky fix to replace that $10 gasket.

Often, there is no workaround like that, so you're racing the clock... hoping something else doesn't break along the way or you get hung up on a rusty bolt. And when something does break, you hope to any god that will answer you that you can get the part in a short amount of time.

$160k is not enough for some of those talented guys... they are like professional athletes in the sense that it's a young man's game and your body is getting used up every day you're in there wrenching.

A Mac dev type using a 5-year-old machine, I will believe it when I see it. I know a few older Macs still kicking around, but those people use them for basic stuff, not actual work. Mac people jump to new models faster than Taco Bell leaves my body.

I worked as an Engine Machinist for a time, and I was told that lead in the fuel aided in sealing the valves, kept valves cooler by helping seal the valve, possibly acting as an impact damper, prevented valves from sticking to the seat and slowed corrosion. When lead was removed from fuel, common practice is to use a valve seat insert made from a different material, usually a high nickel alloy.

Lead fuel was during a time when the cylinder heads were mostly cast-iron, and the valve seat was cut directly into the head. Cast iron is an interesting material, it's reasonably durable, but it corrodes/rusts very easily, especially when exposed to moisture. Gasoline and ethanol both have water as combustion byproducts, so when the engine is off and cools, some of that moisture condenses inside the engine.

Running straight ethanol in an engine without corrosion resistant materials causes much more wear over time because it tends to strip the protective/lubricative oil barriers away, causing iron to corrode when the engine isn't running. Modern engines are aluminum heads with valve seat inserts, stainless steel valves, better piston ring materials (high chromium I think? these were cast iron in the past).

Ethanol has a significant detergent/cleaning effect, even when at 5-10% concentration in gasoline. The valve stems also get some of their lubrication from the fuel, and gasoline is basically a thin oil, and provides protection to mechanical components, better yet with additives. Ethanol is also a difficult fuel in a cold start situation and requires good compression and a strong ignition system to kick it off.

I suspect the whole reason to want to keep lead was motivated by the bean counters involved. They saw a cost savings with lead in the fuel. Cheaper materials and no tooling changes. This means more profits.

AD/Entra is pretty good in my experience working with it. Self-hosting Entra is basically running a Windows Server + Domain Controller, or one of the alternatives you mentioned. Not something I would typically recommend to a customer unless they already had it running and were experienced in it.

IMO, the best way to "handle identity across Windows and Linux" is Microsoft's own tools. You can join Windows, Mac, and Linux machines into Entra now. For $8 a month you can get an F3 license for a user. This gets you the MS Office Suite (web only) plus Intune/Endpoint Management for 5 active devices, licensed Windows 11 Enterprise (good for machines without an included windows license), the ability to control Device Policy and Conditional Access Policy. The F1 license ($2.25) might work, but don't quote me on that (read-only office, no mobile apps, no Windows Hello for Business).

Mac and Linux machines aren't as robust as Windows for endpoint management. But the core features you'd want are mostly there. Apple business manager is needed and has to be paired with Entra, but it's not completely terrible. The Microsoft documentation is actually very helpful here.

Nope! The hype train has left the station! WOOOOO WOOOO!

Seriously, I completely agree with you.

I would accept that as well

To me the solution is: Ban homework. All projects, essays, tests, etc are done at school on air-gapped machines or written by hand. Work is monitored by the teacher with video surveillance in 'test halls'. Cell phones can be kept in a small locker. If the student needs to be reached, a parent or whomever can call the school. Internet research should be done in a separate environment, printed out, then taken to the 'work' location. Like how you used to photo-copy sections of a book. Printed text can be cataloged by the school and compared to completed work for plagiarism.

Take away the internet. Except in a research/library scenario. Give them a limited time to complete tasks. This would promote a stronger work ethic, memory/recall and more realistic to time management skills. They need to learn to rely on themselves, not technology. The only effective way is to remove tech from the equation, otherwise the temptation to cheat to compete/complete is too strong.

This page is 5.0kb and only has 6 other assets. those assets, after being cached, means you get a page load in less than 1 second. Every. Single. Time. This page would load well on a dial-up connection from the 90's.

Mecrosuft locked the thread. Classic.

I will say that as a Windows Administrator, the overall quality of the OS has fallen, and more attention is put into 'features' compared to performance, reliability, etc. I shouldn't have to wait for right click menus. 4gb ram should be a viable web browser and basic Office machine, even in 2025. The bigger and faster machines get, the lazier software companies get.

Generally, Windows is reliable for my Org. The OS is decent; yes it is annoying to have to remove the adware from an office machine. I struggle to understand why 16gb with a good SSD is the bare minimum to make the OS feel like it has a sense of purpose. I have 10-year-old hardware running Linux and mechanical drives that performs really well and only slows down when you're asking it to do heavy lifting.

This is a fun thought exercise.

Pen and paper only? Lock them in a faraday cage to keep RF from going in or out? RF jamming? In-person testing only. No devices, period. Supply hearing aids, glasses and even clothing if you have to.

AI systems can be fooled, people can be bribed, cameras and detectors can miss things. To me it's a risk vs reward equation. If the risk of getting caught is greater than cheating, people will generally not want to cheat. If there is no risk at cheating and only something to gain, cheating will be rampant. If you get caught cheating and there is no jail time, no financial risk, and you can take the test again... why not cheat? Make the barrier to cheat incredibly high and the cost of cheating even higher.

Finally, a life-sized RC car. In my opinion, fast swappable batteries were always the best way to do an electric car. Comes with its own set of problems, but the approach would make electric cars cheaper... possibly no charging circuits, batteries not included (lol) and the car itself would last longer, with battery degradation no longer being tied to the vehicle. Vehicle might maintain its value over a longer time since there is no battery to degrade. Range and performance could improve with battery technology.

Negatives would include inconsistent KWh/performance between packs; Could you own a pack and charge at home or would you be restricted to renting one? Who is liable when it catches fire or you get in an accident and wreck a pack? A pack swap would probably cost more than just charging. Do you 'buy-in' to a pack separately or is it baked into the cost of the vehicle?

Then you have to get all the auto manufacturers to agree on a pack specification.

If I want to know... what Python library I looked at, I have browser history; what I did in code, I have Git; who I spoke with, chat apps have searchable history; what commands I ran; I have terminal history;

We have been solving the history problem with computing for decades now. My limited, imperfect human memory is a feature, not a bug. We get very good at the things we do regularly.

App security issues aside, my opinion of a more useful product would be about how can you make the person more efficient, not by doing something for them, but by informing them of how they can grow.

For example: "I noticed you... write many python command line apps; have you tried the python Fire library?"; you are struggling with some python basics; would you like me to schedule some time to practice Python with some of the libraries you use most?"; you do this task regularly; I think you can automate that like this.."

I used to be a machinist and had tech as a hobby. Eventually I got good enough at tech and now I have machining and mechanical things as a hobby.

Hobbies are just jobs you don't get paid for. Focus on acquiring skills and enjoying it. When you stop enjoying it, it becomes mind numbing, tedious, work. I haven't "worked" in that sense, for years.

My guess is that the bulk of the noise is the HVAC systems that either cycle air in and out of the buildings and/or AC compressors / condenser fans. Building a wall seems like good faith but it's like a cubicle wall in an open concept office, provides more privacy than it does to block sound.

see my response to another reply: https://news.ycombinator.com/item?id=45280742

Low volume stuff, single digits of parts, unless I find that niche, and i might outsource then. I'll keep the send-cut-send type stuff in mind. There are variations to certain parts that I'd like to iterate on, for example, intake runner lengths, diameters and shapes, various adapters/converters, panels/covers, etc. Plus, it's fun to do things yourself and learn along the way. It's not just about the end result.

Using a service would be better for a final part in a better material for the sake of longevity, not just 3d printed either, but cnc'd aluminum for example. Plastics can only go so far, but for short durations in some stressful situations, like intake manifolds, they can give you information. Having a printer in house will let me prototype to verify functionality of some engine parts, and being able to print in resistant materials will let me make final parts of less stressed parts in areas exposed to fuels, oils, etc.

I do repair and modernizing of cars/motorcycles/dirtbike/ATVs, that kind of stuff. Fuel injection conversions are something I specialize in. That is why I would like durable/resistant materials as an option. I won't be trying to earn with it intentionally, unless I stumble upon a niche. There are already more than a couple 3d printing services around here, no need to compete there.

I can do what I need to do in CAD, design my own parts, etc. Other than the above, I'll use it for gifts, stuff around the home, rasPi and ESP32 electronic projects with home assistant, misc. enclosures, etc. I have a broad set of use cases but running production 24/7/365 isn't something I see myself doing unless I stumble upon a niche as I mentioned.

The majority of the public school system has devolved into day-care, not education. Most parents just watch TV, stare at their phones and don't want to be bothered by anything that requires effort. A major societal shift needs to happen for this to be reversed. It's many factors... the parents, the food system, various inequalities, social media, technology, healthcare... the solution is multi-pronged. But if I had to choose id start with social media, smart phones, tablets, etc. Technoloy needs to be seen as a tool and a resource, not primarily as the brainwashing entertainment that it is, and brainwashing them with entertainment is how most people introduce tech to their kids.

This gave me a good chuckle.

imo, really depends on what you're doing, what your team's skills are, growth trajectory, money, etc. if you need to scale a ton of compute up and down, k8s might be a good fit, but for most startups, it's using a sledgehammer to drive a finishing nail.

* how much downtime can be tolerated during a deploy or outage? load balancing and multi-region is more $$$.

* if you have a bunch of linux nerds and an efficient app -- a nginx webserver + your app + Postgres DB and Ansible to manage a single VM with Cloudflare in front of it might be a good option. Portainer in the VM is nice if you want to go with containers.

* if you have a bunch of desktop devs, containers and build pipelines with PaaS are a good option. many are resilient and have HTTPs built in.

* the smaller your infra/devops team, the more i would leverage team knowhow and encourage PaaS offerings.

* the smaller your budget, the more creative you need to be (ec2/storage accounts as part of hosting, singular monolithic VM has relatively flat costs, what free stuff do i have on my cloud provider, etc)

I will look at those options, thank you!

I want to agree with you that the "corvette absolves a lot of sins". But GM is still operating like they are "too big to fail", I hope we don't bail them out again. They make some amazing products and have a long history of advancing manufacturing and technology in their sector. Even with their engineering prowess, almost in spite of it, they continue to make some of the most mediocre vehicles that have ever existed. I swear the only people that buy their cars are former employees and relatives of said employees.

As an owner of a Shark, I don't agree. The ergonomics are great, controls/buttons are grey, everything else is red or black, sounds like you just made a poor choice in model and/or colors. Mine is a corded vac and just works. Replaceable, washable filters, switched power, handles egregious amounts of pet hair (Husky) and a lift-away tank. We replaced a cheap Bissel vacuum with the Shark, and the Bissel was great, it was just really hard to clean stairs with it.

I think of a Dyson as more of a status symbol, like the latest Mac Book, a watch collection, or a Porsche. Dyson owners like telling people they have a Dyson. Most people just need things to work well for their use case, be reliable and affordable.

The saying goes... "Fast, reliable or cheap. Pick two."

UV solved any issue I had getting python to run on a machine.

Just `git clone someproject`, `uv run somescript.py`, then mic drop and walk away.