311–320 of 479 posts
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He's a frickin genius because he found ways to break the law with impunity for his own profit ? I'm surprised by HN sometimes.
You can respect the ingenunity if not the morality of it. His solution was a clever hack because he worked around the law without apparently breaking it directly - clever. That said gambling systems are specifically one class of software I refuse to work on.
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That particular example seems like something that's probably a lot cheaper than you'd initially think. The OS has to constantly take mouse input anyway to move the pointer and dispatch events to userspace. It also needs to record the current and new position of the mouse pointer to dispatch the events. Detecting whether the mouse is being "shaken" can be done with a ring buffer of mouse velocities over the last secon…
Why not use an exponential filter that only uses a single variable?
Not really. Real world traffic won't be uniform over one entire day. 50 QPS would be more accurate.
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Yeah, I see this a lot. I think it's especially easy to introduce this kind of "accidentally quadratic" behaviour using magical ORMs like Django's, where an innocent-looking attribute access like user.groups can trigger a database query ... access user.groups inside a loop and things get bad quickly. In the case of groups and permissions there's probably only a few of each, so fetching all of them is probably fine. B…
Django's prefetch_related mechanism essentially implements the pattern you describe here for you: https://docs.djangoproject.com/en/3.2/ref/models/querysets/#...
When I launched my former bitcoin casino in 2011 (it's gone, but it was a casino where all games, even roulette tables were multiplayer, on a platform built from scratch starting in '08), I handled all web requests through a server in Costa Rica that cost about $6/mo. Where I had a shell corporation for $250/year. Once the front end -- the bullet containing the entire casino code, about 250kb -- loaded, from Costa Ri…
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You're a fricking genius.
He's a frickin genius because he found ways to break the law with impunity for his own profit ? I'm surprised by HN sometimes.
There is no "The law", just a bunch of different jurisdictions with different laws. He didn't break Switzerland law. Does Switzerland's law not matter for some reason?
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What reminded me of this the other day is how MacOS will grow your cursor if you “shake” it to help you find it on a big screen. I was thinking about how they must have a routine that’s constantly taking mouse input, buffering history, and running some algorithm to determine when user input is a mouse “shake”. And how many features like this add up to eat up a nontrivial amount of resources.
That particular example seems like something that's probably a lot cheaper than you'd initially think. The OS has to constantly take mouse input anyway to move the pointer and dispatch events to userspace. It also needs to record the current and new position of the mouse pointer to dispatch the events. Detecting whether the mouse is being "shaken" can be done with a ring buffer of mouse velocities over the last secon…
Looks like it's measuring something like number of direction changes in relation to distance traveled; ignoring the y axis completely.
My 1cpu 2gb ram server: - nginx - slack bot behind Django - OpenVPN - Minecraft server (20 players) - tunneling (reverse proxy for local dev)
All these "X requests per unit time" posts are starting to make me want to break out some of my experimental code... I have some services that can process several million events per second. This includes: compressing the event batch, persisting to disk, validation of business logic, execution of all view updates (state tracked server-side), aggregation and distribution of client update events, etc. These implementati…
Could you detail this, please? I don't get it. What is the flow?
1. Browser is sending events to web server via web socket, instantly as the event is occurring (?)
2. ? (what exactly does the server do?)
Parliamentary enquiry:(PDF) https://www.aph.gov.au/DocumentStore.ashx?id=0a7f6bd5-8716-4...
https://www.zdnet.com/article/census-2016-among-worst-it-deb...
https://www.theguardian.com/australia-news/2016/aug/10/compu...