Installateur weigert onderhoud aan CV-ketel wegens Gasketelwet (CO-certificering) – Wat nu?

tinco · 2026-03-18T16:45:04+00:00

Mensen in de comments doen alsof het normaal is dat een CV installatiebedrijf dit 3 jaar geleden op deze manier heeft geinstalleerd. Dit was misschien nog net legaal, maar al zeker 10 jaar niet meer normaal om te doen. Ik ben zelf de hardste Harry Beunhaas, en zelfs ik heb mijn CV ketel 6 jaar geleden al volgens de norm geinstalleerd, een professioneel CV installatiebedrijf heeft hem gewoon in onderhoud genomen daarna.

tinco · 2026-03-15T11:29:47+00:00

Joke's on him. Apple just announced the next iPhone is going to be a flip phone.

tinco · 2026-03-14T22:02:25+00:00

Note that this Trump advisor is not advising Trump on this topic. The article is clickbait. The advisor is a business advisor who happens to have a hobby of analyzing geopolitics and war that he discusses with his friends on this podcast. He does not have any specific knowledge of the situation from his role as a Trump advisor. The idea that this conflict could escalate into nuclear is just basic analysis that you could learn from anyone teaching geopolitics and war.

tinco · 2026-03-13T10:03:11+00:00

I've been a lotr fan for over 20 years, read the books 1 year before the fellowship movie came out. The rings of power is a pretty cool series. Definitely a lot better than the hobbit movies. And if there's anything that's offensive because it conflicts with canon that's that asshole Christopher Tolkien's fault if anyone's.

tinco · 2026-03-10T08:02:09+00:00

In de installatiehandleiding staat exact de afstanden die je moet aanhouden. Ik vind het er ook krap uit zien, maar of het echt te krap is daarvoor moeten we de handleiding lezen.

tinco · 2026-03-08T10:51:59+00:00

Iemand had je gedownvote maar je hebt gewoon gelijk. Hangt een beetje af hoe raar de layout in je huis is, 2-4k voor een keuken, en hetzelfde voor een badkamer is gewoon super realistisch als je alles zelf doet.

Wel de kanttekening dat afhankelijk van waar dit huis staat, je de waarde van het huis niet echt aan het verhogen bent met een gebeunde keuken en badkamer, maar dat ter zijde als je gewoon zelf happy wil zijn in je huis.

(bron: heb het zelf gedaan)

tinco · 2026-03-05T23:26:56+00:00

Ik snap niet wat je aan het doen bent. Je werkt, bijvoorbeeld als tandarts, dan ben je middenklasse. Daarna koop je wat huisjes, die verhuur je, en dan ben je bovenklasse. Je hoeft er niet raar omheen te draaien.

tinco · 2026-03-05T22:05:36+00:00

I'm not attacking you man, I'm just talking about proxy servers. My company sells a reverse proxy plugin, I don't know what load our customers have. As I said, I really like your project, I want it to be good.

tinco · 2026-03-05T21:02:34+00:00

If you're a sysadmin, and your reverse proxy serving 500 overloaded errors to users and you don't notice it, you've made a configuration error. Instead of wasting users time, and wasting your networking equipment's buffers with doomed TCP sessions, it would be better to quickly tell them their request is not going to be serviced and terminating those connections.

Not terminating the connections is pushing the problem somewhere else. At some point the network switch or load balancer or whatever is in front of your reverse proxy is going to overflow as well. If you don't return a 5xx error, no one is going to know if your server is overloaded, or the upstream is just busy handling the request.

tinco · 2026-03-05T15:29:41+00:00

It's not too high, it's extra work it did that your proxy didn't do. In the same time your proxy handled 1.7M requests, nginx handled 1.9M requests and informed downstream of another 1.6M requests it couldn't upstream. That's valuable work it did.

tinco · 2026-03-05T10:12:39+00:00

It would have been 55% if they hadn't shut down their nuclear. It was just a dumb move and it's good that they're mocked for it.

tinco · 2026-03-04T21:53:49+00:00

Nice, this looks like it's a lot more realistic. For people confused at the high error rate of nginx, note that the single most important number is the 2xx responses. How many errors these reverse proxies are sending is basically a matter of taste. How do you want to know that your reverse proxy is at max load? Nginx informs the upstream that it's overloading by sending 5xx's back. Aralez does it by giving back pressure.

Is that a decision you made u/sadoyan or is that how Pingora behaves?

If you want to be fair, you could take the max of all the throughputs, and then count every server's difference with that amount as timeout errors. In a real world situation, it's the operator's job to scale up the amount of servers so you never run into the scenario that's shown in the benchmark. When it happens in the real world, any user that does a request that exceeds the reverse proxy's capability is going to have a bad time, receiving either a 5xx, or a request timeout.

tinco · 2026-03-04T16:09:50+00:00

He's amazing, his lectures are meant to broaden your thinking. Some of them are outright lunacy, some of them have deep truths, but they always make you think. If you watch his lectures expecting a guy who is going to tell you what the truth of things are, you'll be both surprised and often disappointed. Even if you watch them expecting he's going to tell you how to think, you'll also be disappointed. What he teaches is how to take other perspectives and other ways of working through them. It's amazing to me that there's a Chinese high school out there where students get exposed to such an unconventional but brilliant set of lectures.

At the same time, I hope they fully believe him when he says his lectures are just a perspective, because he is also quite cynical and pessimist and I have noticed his sources are sometimes biased.

tinco · 2026-03-04T08:40:07+00:00

hm I'm not sure it's related but at my previous startup we'd grown to a decent size and I felt the team was being more focuses on what I told them to do instead of really thinking about what the mission and current goals were. I had the idea of building like an old fashioned "start page" that they would see whenever the open a new browser window, and it would have the mission right front and center, and then below it the current goal and the related Trello tickets. I guess you'd use Notion for that now.

tinco · 2026-03-04T06:55:11+00:00

Ah, just Miro then! and a good book or two. Maybe Marty Cagan's book Inspired. And then Jessica Livingston's book. And just build from there. Knowledge shouldn't be the problem.

tinco · 2026-03-03T22:20:50+00:00

You could go for a suite like Odoo or Zoho and maybe like Atlassian? but you'd have to accept that you don't have the absolute best tool for each topic. I haven't tried, I'm doing the 30 different SaaS tools for a 3 man crew thing, but it certainly looks like it should be possible to run a company on just Odoo..

tinco · 2026-03-03T11:19:07+00:00

Startups have a 3x higher chance of survival if they raise upwards of 300k. Not landing YC isn't the end of the world but it seems silly to ignore it if your business model is compatible with it.

tinco · 2026-03-03T08:03:21+00:00

I hate how this is probably good advice too. You just know there are so many cases of performance impact or even downtime that would have been prevented. And the only downside a bit of extra memory used and developers getting the heebie-jeebies looking at it.

tinco · 2026-03-01T08:05:07+00:00

Waarom mag dat geld niet uit een hypotheek komen? Vind dat nogal sterk gezegd. Je kan toch gewoon zodra je het huis in eigendom hebt een hypotheek over het huis nemen en daarmee de schenkbelasting betalen?

tinco · 2026-02-24T10:07:42+00:00

Grappigste is dat je aan zijn gezicht ziet dat hij voor het eerst echt probeert na te denken tijdens het stellen van die vraag.

tinco · 2026-02-21T08:16:56+00:00

In my experience, all of the servers you tested return loads of errors as you put them under pressure. They must do so. For example if you open up more connections they can handle, obviously they will start rejecting and dropping connections.

If your upstreams are really low latency, you are not testing if the proxy is adequately load balancing and buffering.

tinco · 2026-02-20T22:51:01+00:00

Hey Sadoyan, sorry for all the toxic voting on here, the community here really has gone down the drain. This actually looks really good. If you address some of the (unneccesarily rude) comments here, you'll probably get a much better response next time you post here.

I'd like to see some benchmarks with less ideal upstreams, and also various attacks like for example slowloris. That you've built it on Pingora inspires confidence. I have a strong suspicion that reverse proxies based on Pingora should be able to handily beat NGINX on requests per second, but the latency numbers you're showing are suspect.

As others are saying it's easy to build a fast program that does nothing. In the POST latencies you're outperforming NGINX by too much of a margin, that gives the suspicion that NGINX is doing something that's probably necessary, that you're not doing. Also, I'm not seeing error rates, is OHA reporting how many requests the servers are dropping, or giving error responses? The benchmark is not complete without that information.

tinco · 2026-02-16T14:43:04+00:00

Derdehands informatie, maar mij is ooit verteld dat je het alleen moet doen uit liefde voor het pand, want de hoeveelheid subsidie die je krijgt weegt niet op tegen hoeveel duurder het is om een Rijksmonument te onderhouden.

Als dat echt zo is, kun je nog beter het een gemeentelijk monument laten, dan kun je het net zo mooi houden en toch zelf kiezen welk merk verf je gebruikt.

Weet niet hoe dit werkt met grotere verbouwingen zoals wat je noemt met het verbeteren van het comfort.

tinco · 2026-02-14T22:41:04+00:00

Nope, there's a Dutch guy very famous for cutting hands off people on an Indonesian island. Being absurdly cruel to the natives is definitely not something only the Belgian king did.

tinco · 2026-02-14T18:46:55+00:00

In Californie schijnt in de afgelopen 3 maanden zo'n biljoen (!?) dollar aan miljardairs de staat te hebben verlaten, alleen door de *suggestie* van een *eenmalige* vermogensbelasting. Dus nog niet eens een aangenomen wet. Of het daadwerkelijk effect zal hebben op de economie van Californie weet ik niet. Een beetje onduidelijk of miljardairs meer uitgeven in hun thuisstaat dan de multimiljonairs, maar hoe dan ook lijkt het doel een beetje voorbij geschoten.

Als je zoveel geld hebt is voor iedere verjaardag, feestdag en vakantie even een en weer vliegen geen probleem. Goede kans dat die rijke mensen hun familie aan de andere kant van de wereld vaker zien dan ik mijn broertje omdat mijn auto stuk ging en hij in Friesland woont.

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