mping (u/mping) - Readit News

mping commented on PlanetScale Offering $5 Databases planetscale.com/blog/5-do... · Posted by u/ryanvogel

mping · 2 months ago

Jesus dude,just say it was a mistake to call it free forever. How can you be a founder or whatever, have a product and not expect people to judge the words your website had, or the words you say? You should know it comes with the territory.

Doesn't matter how hard you guys worked to be profitable, it's about building trust and relationship with your audience.

mping commented on OpenTelemetry Is Great, but Who the Hell Is Going to Pay for It? adatosystems.com/2025/02/... · Posted by u/thunderbong

rbanffy · 6 months ago

> But I’m still going to be the Marie Kondo of IT and ask if that specific data point brings you joy.

There seems to be a strong "instrument everything" culture that, I think, misses the point. You want simple metrics (machine and service) for everything, but if your service gets an error every million requests or so, it might be overkill to trace every request. And, for the errors, you usually get a nice stack dump telling you where everything went wrong (and giving you a good idea of what was wrong).

At that point - and only at that point, I'd say it's worth to TEMPORARILY add increased logging and tracing. And yes, it's OK to add those and redeploy TO PRODUCTION.

mping · 6 months ago

On paper this looks smart, but when you hit a but that triggers under very specific conditions (weird bugs happen more often as you scale), you are gonna wish you had tracing for that.

The ideal setup is that you trace as much for some given time frame, if your stack supports compression and tiered storage it becomes cheap er

mping commented on Java 24 jdk.java.net/24/... · Posted by u/ludovicianul

scottlamb · 9 months ago

> No pinning virtual threads is huge. Finally you can virtual thread with near-wild abandon, as God intended.

I see that formerly it pinned virtual threads "when it executes code inside a synchronized block or method", and "frequent pinning for long durations can harm the scalability of an application by capturing carriers". You were supposed to "avoid frequent and long-lived pinning by revising synchronized blocks or methods that run frequently and guard potentially long I/O operations to use java.util.concurrent.locks.ReentrantLock instead."

How big a problem was this in practice? On the one hand, I think "harm the scalability" is putting it mildly—if you have a whole bunch of virtual threads doing IO, only running num_cores of them at once is devastating. On the other hand, holding a lock while doing IO smells wrong. Is this really common?

mping · 9 months ago

I think in practice it has to do with some libs (eg jdbc drivers) that would be relying on synchronized. If the performance with vthreads was much worse for some cases it would be a bit of failure

mping commented on Pick Your Distributed Poison hazelweakly.me/blog/pick-... · Posted by u/mooreds

jashmatthews · a year ago

There are a bunch that offer strong consistency e.g. Cloud Spanner and DynamoDB.

mping · a year ago

Don't forget FoundationDB

mping commented on DJI announces an electric mountain bike drive system dji.com/sg/newsroom/news/... · Posted by u/Logans_Run

Aurornis · a year ago

> Many high power ebike enthusiasts (for example “High Voltage DIY Electric Bikes” channel on YouTube) argue that these low legal power limits actually make e-bikes less safe, as you need a good 2-3kw to actually ride with the flow of traffic. At US or worse UK power limits, you don’t get enough of a boost for that and you’re more likely to get hit from behind.

Those "High power ebike enthusiasts" are actually "small electric motorcycle" enthusiasts.

The point of the regulations is to keep the power levels within the range of what's expected for a bike.

I'm fine with a separate class of regulations allowing higher power, but only if those vehicles are easily disallowed from bike trails. If the goal is to ride around with cars in traffic all day, it shouldn't be a problem to be banned from bike trails. There's a real problem of overpowered DIY or hacked e-bikes tearing up trails everywhere and getting out of control.

3kw is 4 horsepower. It's more than even the world record for peak human power output and far more than any human can sustain.

I think it's cool that people build these high power machines, but let's be honest about what they are: Electric motorcycles, not bikes.

mping · a year ago

Well put. I wouldn't want to ride with my kids with a 3000w bike breezing pass me in the bike lane at 45km/h

mping commented on How to do the jhanas nadia.xyz/jhanas... · Posted by u/mandliya

nataliste · 2 years ago

>Claiming that someone attains Arhat (or Arahant, if you are used to Theravada texts) with just a couple of meditation retreats is just wild. Because the 9 dhyana, or 9 samadhi, or 9 Juana corresponded to the level of wisdom of an Arhat. It corresponds to enlightenment in Theravada, and in Mahayana too - just not the "biggest" one.

To be fair, the Pali Canon is filled with episodes of followers spontaneously achieving arahantship after practicing only a brief time. I'm having trouble finding the sutta, but even the Buddha says with a single moment of appropriate practice, enlightenment is obtainable immediately.

mping · 2 years ago

Sure! But those were not ordinary people but special disciples, who had accumulated alot of blessings over a long time, thus were able to meet the Buddha and become enlightened with a couple of sentences from the Buddha. Still, the Buddha himself certified their enlightenment, they didn't go around claiming it themselves. Huge difference.

mping commented on How to do the jhanas nadia.xyz/jhanas... · Posted by u/mandliya

burke · 2 years ago

I dunno, I think it’s worthwhile to acknowledge that this describes the (very?) shallow end of the pool but these language game land wars are profoundly uninteresting to me.

This–and TWIM jhanas in general–certainly involve the arising of the relevant jhana factors. People feel real and somewhat life-changing experiences of piti, sukha, equanimity… are those, due to limited concentration, below some critical threshold to earn the name “jhana”? Sure there are reasonable arguments for this position but it’s just a language game. Both strong and weak versions of these states are real phenomena that lead to increases in wellbeing.

Besides, it’s not even entirely clear that the earliest texts are actually describing something all _that_ much more concentrated than Nadia does, although the later visuddhimagga most certainly does, and those teachers certainly teach it.

I’ve heard some teachers contrast Sutta-jhanas to visuddhimagga-jhanas and I think that’s a reasonable distinction.

mping · 2 years ago

Claiming that someone attains Arhat (or Arahant, if you are used to Theravada texts) with just a couple of meditation retreats is just wild. Because the 9 dhyana, or 9 samadhi, or 9 Juana corresponded to the level of wisdom of an Arhat. It corresponds to enlightenment in Theravada, and in Mahayana too - just not the "biggest" one.

So it's actually very harmful to do these claims; each dhyana (or jhana) level corresponds to a certain level of wisdom, and you are supposed to have less and less afflictions as you move up. The problem with meditation training is that is very common (and easy) to get sidetracked for 10 years thinking you have attainment but you are stuck. The Chinese style is to find a good teacher, an enlightened teacher, a so called Good Knowing Advisor who can certify your attainment or put you on the right track. Because otherwise it's just wishful thinking.

Best or luck to the author, but like the GP said, have some humility and find a competent, certified teacher. Making false claims, even out of ignorance will prevent you from accessing the proper instructions in the future.

mping commented on Ask HN: 30y After 'On Lisp', PAIP etc., Is Lisp Still "Beating the Averages"? · Posted by u/dualogy

delegate · 2 years ago

In my experience (Clojure and Clojurescript), LISP is a powerful tool for quick prototyping and experimentation as an individual hacker. The REPL-driven flow can get you far very fast. Add a couple more experienced hackers to the mix and you can build something great fast.

The downside is that it's a difficult tool to become fluid in and so it's difficult to find experienced hackers, so scaling the team is going to be slower than with other, more popular languages.

mping · 2 years ago

I see your point, but in my experience you can ramp up some eg: Java developer real quick; and in a couple of months they can quickly start to become more productive than with Java.

There are alot of caveats here, and it highly depends on the teams, projects, maturity, quality of tools, and so on, but there are not alot of weird concepts in clojure that makes it that hard to understand (as a counterpoint to eg: rust borrow checking rules, or C++ templating, and so on).

The hard part with clojure is having just enough discipline to keep things in check.

mping commented on Show HN: File0 – An easier way to manage files in serverless apps file0.dev... · Posted by u/davidkarolyi

renegade-otter · 2 years ago

This is true for all of Amazon's products. They enshitified everything by being beholden to never-ending customer requests for more fine knobs. Their products have a serious "let's just bolt this on" vibe. There is no theme or reason to it.

AWS went from "just push a couple of buttons and you are running in the cloud without a dedicated sys admin" to "you are going to have to hire a team of cloud admins because no one understands all the options and costs anymore".

Compare AWS to DigitalOcean, for example - the difference in simplicity is mind-blowing.

mping · 2 years ago

It's just different maturity stages of different products. It's very hard not to add features when your bottom line depends on it.

mping commented on WiFi 7 is officially here, but routers are pricey. Do you need it yet houstonchronicle.com/busi... · Posted by u/ohjeez

madaxe_again · 2 years ago

Yeah - I have had this repeatedly as I tend to live in old stone houses with meter thick walls.

I’ve found powerline networking to work surprisingly well - over a hundred megabits on a crufty 70 year old power install, and I just jam them strategically in rooms that are separated by a thick wall.

At home, I throw regular 802.11n half a kilometer through empty air with a yagi, but that’s a different story entirely.

mping · 2 years ago

Same, I have two powerline APs that deliver ethernet+wifi, more than enough for chromecast/netflix/etc. The only issue i have is sometimes clients don't choose the best APs.