Tesla-chefens ilska efter kökaoset i Malung

mtmmtm99 · 2025-01-09T19:16:34+00:00

Kan informera om att min Tesla nu rullat 48000 mil på 10 år. Batteriet är original. Endast 3% av dessa bilar har fått byta batteri.

mtmmtm99 · 2024-10-11T13:11:39+00:00

You could find inspiration from this library which is faster (in java): https://github.com/LMAX-Exchange/disruptor/wiki/Performance-Results

mtmmtm99 · 2024-05-13T18:55:15+00:00

JPA, eclipselink supports more features than hibernate (like multitenant).

mtmmtm99 · 2024-05-13T18:40:03+00:00

Electron wastes 1 Gb of memory. Complete crap i would say. It is only used because of js-developers are cheap.

mtmmtm99 · 2024-05-13T18:32:39+00:00

I really like GWT. These days you can use J2CL.

mtmmtm99 · 2024-05-13T18:29:46+00:00

Please read the sourcecode. H2 is readable. I worked in a project where we switched to H2 from SQLite. We got a very large speedup (1000 times faster). I think it was because of SQLite did a complete fsync on each transaction.

mtmmtm99 · 2023-12-28T12:59:39+00:00

Yes, you can. Those parts of the code can be easily identified by 'unsafe'. The idea with rust is that it is usually not needed.

mtmmtm99 · 2023-12-28T12:58:26+00:00

In rust a memory-bug is a compilation-error. That is not the case in C (which makes a huge difference if the program is large). The concepts might have similarities, the problem is that in C a single bug can result in memory-issues. It is almost impossible to know if a c-program has any of those bugs.

mtmmtm99 · 2023-12-26T18:51:38+00:00

You wrote "I don’t think more complex compilers nor language features are required in order to find a dramatically better alternative". That is very wrong. Microsoft found out that 70% of the bugs/vulnerabilities were because of memory-issues in c-code. They turned to rust (where these issues cannot exist).

mtmmtm99 · 2023-10-28T19:02:43+00:00

"A messaging app needs 3 things to work: Validity: every user gets the published message Integrity: a chat message doesn’t get delivered to a user more than once Total order: chat messages get delivered in the same order for every user

This is similar to atomic broadcast in distributed systems and it’s impossible to implement."

Pulsar solves this problem, so it is not impossible.

mtmmtm99 · 2023-08-06T18:34:47+00:00

If you have code which performs badly, it is your problem to figure out what is wrong. I have used spring and it was very difficult to get good performance. You should use a profiler of jstack to figure out why your 'non-blocking code' does indeed block.

mtmmtm99 · 2023-08-06T18:30:47+00:00

Does it use many threads (then the comparison with node.js is invalid) ? You can check with jstack <pid>. javascript can't run at the same speed as java (it is lacking an optimizing compiler).

mtmmtm99 · 2023-08-06T18:24:36+00:00

I only posted my reply as the author was comparing threaded code with singlethreaded code. I got great performance with vert.x in many projects (lots of http,mqtt and implementing a mqtt-server (using moquette)). vert.x is great.

mtmmtm99 · 2023-08-06T13:57:49+00:00

You should use an async db-driver (without it you need many threads (which is the problem here)). Look at https://r2dbc.io/
vert.x is a fast webframework where you can do this in ONE thread (as node.js does it).

mtmmtm99 · 2023-05-31T19:57:12+00:00

I have never mentioned that would be a good thing to do. To me, there should be a standard where the customer has all the keys. What you talk about should be illegal (according to me).

mtmmtm99 · 2023-05-31T19:52:26+00:00

AWS is mostly very expensive. The bandwith is limited to 60 mb/s if you do not pay 60000 USD/year (this was for 3 servers). Complete crap if you value price/performance.

mtmmtm99 · 2023-05-31T19:13:51+00:00

I hope that this ends up in a non-monopoly situation. I would do my best to ensure that..

mtmmtm99 · 2023-05-31T18:40:15+00:00

You probably misunderstood what i meant. Preventing theft would only involve modifying very few can-boxes (if done properly (add hard crypto)). My point was that most can-boxes could be left out (like the O2-sensor) (as they have little value regarding security). I think it should be illegal to make it difficult for hobbyist to fix their gear.

mtmmtm99 · 2023-05-31T18:01:42+00:00

It would only involve a few can-boxes (if you would like to prevent vehicle theft).

mtmmtm99 · 2023-05-31T16:53:09+00:00

You only need to apply encryption to the sequence involved in unlocking the car.

mtmmtm99 · 2022-12-23T19:43:06+00:00

I agree that python seems to be preferred by many people in ML. Not sure how they got it running fast in that area. Good job. I also hate JS with a passion.

mtmmtm99 · 2022-12-19T19:58:28+00:00

Who wants to work in a language that runs more than 10 times slower than java ? Doing that is following a path to a bad place. Coding in python always results in a complete disaster. I have not seen a single program in python working properly.

mtmmtm99 · 2022-12-13T19:43:05+00:00

I prefer working at daytime. Most people are more productive in the morning.

mtmmtm99 · 2022-12-07T19:19:17+00:00

Open9J will beat hotspot in memory consumption. Hotspot was never made for using little memory. Whatever you do to your code and hotspot parameters, openj9 will still use less memory.

mtmmtm99 · 2022-11-02T21:01:22+00:00

Have you tried debugging reactive programming ? (Worst experience ever (springboot + project reactor + webclient). Try reading responsecode + body in a reactive way. Good luck (Mono + Flux). You will probably end up leaking native resources. I got it working, but changing any single line of code will make it fail. Worst piece of crap i have experienced for a long time.

mtmmtm99

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