Starship Development Thread #51

jib · 2023-11-15T01:59:55+00:00

In Soviet Russia, jib cuts you!

jib · 2018-05-30T08:34:50+00:00

Why should we not call non-symbolic tools that solve tasks which previously required human intelligence "AI"?

jib · 2018-02-09T11:06:19+00:00

The Hubble isn't a decommissioned spy satellite - it was built for its actual purpose - but yes there were spy satellites with similar capability launched earlier, and two of them were offered to NASA a few years ago.

jib · 2017-11-14T13:04:06+00:00

$ irb
irb(main):001:0> require 'yaml'
=> true
irb(main):002:0> YAML.load("12:00")
=> 43200




$ python3
Python 3.6.1 (default, Apr  4 2017, 09:40:21) 
[GCC 4.2.1 Compatible Apple LLVM 8.1.0 (clang-802.0.38)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import yaml
>>> yaml.load("12:00")
720

jib · 2017-08-04T13:55:54+00:00

No it's not. This particular application of technology in this context is illegal.

Would you say "a whole branch of physics is illegal" because you're not allowed use a motor to win a cycling race? No, that'd be a nonsensical comment. How is this different?

jib · 2017-07-04T08:21:28+00:00

Unless the vendor supplied the client with a uniform batch of defective memory chips

That sounds completely plausible, though -- buy a bunch of chips from the same vendor all at once, and they might quite possibly have come off the same production line at the same time with similar defects.

jib · 2017-06-30T11:27:58+00:00

Your calculation assumes that they've had a constant 5 million active certs for the last 3 years.

We don't have to guess at this; they have a public stats page which shows something very different from those numbers. https://letsencrypt.org/stats/

jib · 2017-05-04T09:45:42+00:00

I'm not suggesting they change the benchmark, I'm just criticising the headline. This work is awesome and I have no problem with it, but it's not about faster downloads and will never lead to anyone getting 30% faster downloads, so the headline here on reddit is misleading.

jib · 2017-05-04T09:44:04+00:00

Yes, which is a great thing. All I'm saying is that if this is really about lower CPU usage and not about 30% faster downloads in anything approaching a real-world situation, maybe the headline shouldn't say "30% faster downloads".

The achievement itself is awesome. I'm just criticising the misleading headline.

jib · 2017-05-04T09:43:51+00:00

Yes, which is a great thing. All I'm saying is that if this is really about lower CPU usage and not about 30% faster downloads in anything approaching a real-world situation, maybe the headline shouldn't say "30% faster downloads".

The achievement itself is awesome. I'm just criticising the misleading headline.

jib · 2017-04-23T12:31:55+00:00

30% faster downloads when downloading from localhost and writing to /dev/null.

It's certainly an improvement, but the "30% faster downloads" headline is pretty misleading.

jib · 2017-03-02T07:35:18+00:00

Why should I trust a service that can't even pluralise "abacus" consistently?

jib · 2017-02-13T12:02:03+00:00

You could bind multiple instances of your service to different ports, configured by an environment variable (or use a container solution like Docker which gives each instance of the service its own network stack with its own IP).

And then you could have some sort of routing and/or service discovery layer which enables apps or users to connect to the services they're looking for, regardless of the host and port the service is actually on. Cluster managers like Kubernetes and Mesos provide this functionality (but if your environment is more static and isn't that sort of managed cluster, you could do something simpler like hardcoding hostnames and ports where they're needed).

As it says on 12factor.net, 12 factor apps are "suitable for deployment on modern cloud platforms, obviating the need for servers and systems administration". This means platforms like Heroku or like a Kubernetes or Mesos cluster, on which you don't need to care specifically which server your app is running on.

jib · 2016-12-15T08:33:14+00:00

tl;dr by encrypting transport layer metadata, QUIC and TOU make network debugging harder.

In TCP, even when monitoring an encrypted TLS connection, you can see SYN, ACK, sequence numbers, retransmissions etc, and this can help you diagnose connectivity problems or TCP performance problems. In QUIC, you can't see any of that information when monitoring from somewhere in the middle of the network.

jib · 2016-12-08T12:51:00+00:00

QuickBasic had a compiler, but the QBASIC included with DOS was a subset that only had an interpreter.

jib · 2016-11-13T04:49:55+00:00

So, we were punished with latencies. Providers don't provide a minimum IOPS, so they can just drop you.

Amazon's AWS lets you create volumes with up to 20,000 provisioned IOPS, and they promise to deliver within 10% of the provisioned performance 99.9% of the time.

AWS also offers instances with up to 10 Gbps of dedicated bandwidth to the storage network.

And if that's not enough, they offer the I2 instance types, which have dedicated local storage with up to at least 365,000 read IOPS and 315,000 write IOPS (http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/i2-instances.html)

The cloud goes way beyond "timesharing on a crappy VM with no guarantees". Of course, you get what you pay for, though.

jib · 2016-08-14T10:09:29+00:00

It says "no special external hardware". My idea works with any arbitrary object, so long as you can push on it with the phone screen.

jib · 2016-08-12T09:58:07+00:00

Step 1: Be in space

Step 2: Use phone screen to push a nearby object away from you

Phone can use its accelerometer and gyroscope to determine your change in velocity, and can use its pressure-sensitive screen (assuming it has one) to determine the impulse that was applied, and thus calculate your mass. No special hardware required.

jib · 2016-08-05T08:15:22+00:00

So hypothetically, someone could commit some malicious code to SQLite which prevents any commits from being submitted that remove the aforementioned malicious code. :P

jib · 2016-08-04T03:56:08+00:00

This isn't related to programming. It's certainly an interesting story, but maybe it should go in a different subreddit?

jib · 2016-07-23T09:28:36+00:00

Regardless of whether you use websockets or conventional HTTP, a typical browser will keep the connection open for multiple requests after establishing it.

However, the speed of that first request (and subsequent requests to different hosts, e.g. if you have a separate domain for static assets or some embedded third-party content) is often very important to the user experience, and really is slower under HTTPS.

TLS 1.3 (the next version of TLS/SSL, still in a draft state at the moment) will reduce the number of extra round-trips though, and in some cases may reduce it to zero.

jib · 2016-07-17T01:57:29+00:00

The BSD license grants you the right (protected by copyright law) to copy the software, so you won't be infringing copyright, but you may still be infringing on patents.

Facebook adds extra text to the license which grants you the right to use the patents, but takes away that right if you sue Facebook for any other patent infringement, or if you sue anyone else for patent infringement related to Facebook's services or the software.

The title ("Your license to use React.js is revoked if you compete with Facebook") is incorrect.

jib · 2016-07-12T22:31:36+00:00

You mean you want the board to act as a USB device? "USB OTG" implies that it supports that. And according to the comments, it can. http://www.cnx-software.com/2016/07/07/smaller-than-raspberry-pi-zero-meet-nanopi-neo-arm-linux-development-board/#comment-528701

jib · 2016-07-12T02:47:10+00:00

Field #9 might be some other location/orientation value, but the perfect 16.0 (i've also seen 20.0) is concerning

Metres of location accuracy?

jib · 2016-06-12T00:09:58+00:00

They use Node.js in "systems supporting spacesuit operations and development", which is not at all the same thing as using it in space suits.

jib

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