HNHacker News
TopNewBestAskShowJobs

prohor

443 karma · joined April 10, 2014

submissionscomments
prohor··on Is a billion dollars worth of server lying on the ground?
GCP also has sustained-usage discounts, which are very convenient, as even without reservation as in AWS, you get up to 30% discount if you have more constant usage, but you still have the full flexibility of on-demand.

When it comes to pricing comparisons of cloud see Cloudorado: https://www.cloudorado.com/

prohor··on Show HN: Simplified music notation
I have the same feeling, that the note notation is way too complex. I would love to see something like this getting traction.
prohor··on Designing Solo, a new U2F/FIDO2 Token
Thanks. Yes, this is something what I think of. Does it show on the screen what operation you confirm with U2F? Or just "U2F authentication"? But cord makes it far less convenient unfortunately.
prohor··on Designing Solo, a new U2F/FIDO2 Token
What I miss in the U2F tokens is a small display that would show transaction details which is approved.

Imagine you have a malware on your PC; it can send another transaction than the one you see in the browser, while the URL would still match. Having transaction summary on the token would be the last verification point where can still spot something is wrong.

prohor··on Ask HN: Firefox vs. Chrome security
The release is also improving sandboxing for Linux:

https://www.bleepingcomputer.com/news/security/firefox-57-br...

Sandboxing for Windows was introduced in version 54.

prohor··on When Citi Bikes Are Faster Than Taxis in New York City
Rally nice analysis. It is a pity that open access to data like this is still exception, not a rule. I wish to have such data for my city.
prohor··on AWS announces per-second billing for EC2 instances
Agreed - just check cloud comparison, AWS is rarely at the top: https://www.cloudorado.com/cloud_server_comparison.jsp
prohor··on LogDevice: a distributed data store for logs
For me the difference seems to be in handling large number of distinct logs. In Kafka every log & partition is a separate file and moreover it keeps it open. So, storing multiple logs results in writing to many files so eventually random write IO; and also you may hit limits of open files. You can multiplex logical logs in each Kafka log, but then you read unnecessarily other logs.

Keeping SS tables makes it more sequential write and reasonably sequential write, as long as you have enough RAM to get multiple records of each log, so they constitute a continues blocks in flashed file.

Actually you could get very similar result using Cassandra, which also uses SS tables. The difference is that Cassandra keeps merging files, which actually makes much more IO traffic than clients. Cassandra will typically need 16x more IO for merging then actual data write rate. You can limit it a bit if you create time shard tables.

prohor··on Ask HN: HNers who got their “Show HNs” on homepage, how is your site doing now?
6 years ago I submitted cloud computing comparison - https://www.cloudorado.com/ . It has hit first page with 38 comments. There was a nice spike in traffic that I've never seen later but it faded quickly. Now traffic mostly comes from search and some links that popped up here and there. The site is live and provides revenue (but not spectacular; fraction of what I need for living).
prohor··on Why traditional password managers are flawed
There is similar plugin for Firefox for years. There is also one for Chrome that uses the same algorithm, so generates the same password. It keeps user name and version of the password for a domain in regular FF password storage.

https://addons.mozilla.org/pl/firefox/addon/password-hasher/

prohor··on Ask HN: Alternatives to Yubikey?
I just wonder - if the same key is used for enabling password manager and 2FA ... is it still 2FA? I mean, having the token you get both access to password and second factor to a service.
prohor··on Ask HN: Alternatives to Yubikey?
I love the feature they keep passwords in fact on the device itself, not as a key to enable password manager. I was looking for something like that. If only they offered strong encryption for Europe!
prohor··on Realtime Bitcoin
1.7 GW power. Wow! That means about 1 ton of CO2 released per hour (according to: https://carbonfund.org/how-we-calculate/).
prohor··on Performance bugs – the dark matter of programming bugs
The fun begins when you need to find performance issues in production, where you cannot really use profiler. Then you need to jump into APM tools. Unfortunately it seems there nothing really for that level for free, but take this for example: https://www.dynatrace.com/blog/code-level-visibility-for-nod...
prohor··on 'My life was ruined by a typo'
In Poland there were many people killed, potentially due to a coma (,). A court process of the pacification of Wujek [1] was mainly whether a response to question "Should we shoot?" was "No, wait for orders" or "Don't wait for orders" (in Polish less difference "Nie, czekajcie na razkaz" vs. "Nie czekajcie na rozkaz"). This was really a ruining life of many just by one coma.

1. https://en.wikipedia.org/wiki/Pacification_of_Wujek

prohor··on Ask HN: Other CA with API, similar to Lets Encrypt?
Thanks for hints. The Caddy server looks nice.

The default and simplest scenarios is that our domain is used, so that the user is not forced to setup DNS, but they can if they wish. But of course having a set of domains is an option. The problem with that is, that there is still a limited set of domains that we could use and still easily matches with the product.

prohor··on Ask HN: Other CA with API, similar to Lets Encrypt?
It is about 1.5 month now.

Yes, using different domains is a potential option too, but the domain is directly connected with the product, so want to consider other options too.

prohor··on Ask HN: Other CA with API, similar to Lets Encrypt?
Well, ACME would be perfect, but actually any fully automated process would do.

We provide an on-prem software available via browser. And well, we want to be very nice for our customers, so upon installation we also setup a subdomain in a domain that we control and request a certificate for that. At the end of installation we provide user with HTTPS URL where the service is available and with a valid certificate :-) Of course they can later opt-out, use their domain or certificate, but we make it work without security warnings from the first moment.

prohor··on Ask HN: What current companies have the best software engineering culture?
Spotify sounds very interesting to me. But I don't work there, so cannot really tell if it really works as they describe.

https://labs.spotify.com/2014/03/27/spotify-engineering-cult... https://labs.spotify.com/2014/09/20/spotify-engineering-cult...

prohor··on Why isn't there a Google for the law?
I was always wondering rather on Stack Overflow for law, where one could get advice from other knowledgeable. But I talked with few lawyers (technologically open-minded) and they weren't interested. It seems the final root cause is that in software development the level that you get help is not the level where the end products are and compete. For lawyers it would be different - an advice is the root of their service, so it is the end product. So if they were helping with advice, they would directly help competition. Secondly, their customers could end up in that level instead (while software customers cannot benefit from stack overflow).
prohor··on Google Cloud is 50% cheaper than AWS
"large" is the smallest instance with fixed CPU allocation that AWS is providing these days.
prohor··on 98% of sites on Cloudflare now use IPv6
I was quite wrong - IPv6 was just announced by AWS :-)
prohor··on 98% of sites on Cloudflare now use IPv6
They have little incentive. Would you change provider just to get IPv6?
prohor··on Ask HN: What's your backup solution?
1. Daily: rsync snapshots to disk attached to Raspberry Pi (similar to rsnapshot)

2. Periodically: duplicity to Oracle archive storage (7x cheaper than AWS Glacier - $0.001)

prohor··on Google Cloud is 50% cheaper than AWS
Try using https://www.cloudorado.com/ . It will calculate price for specific configuration for AWS, GCE, Azure and more. And you can choose if you want long-term commitment or not.
prohor··on Open Guide to Amazon Web Services
I will also add https://www.cloudorado.com/ for those who want to also compare against other clouds.
prohor··on Graph-Powered Machine Learning at Google
Is there implementation released maybe? Similar like they did with TensorFlow.
prohor··on Firefox 49 fixes sites designed with WebKit in mind, and more
Yes, but the problem it is part of current standard, 2.0 is still work in progress. Also alternative API from SVG 2.0 is not yet delivered by Chrome either as far as I know.
prohor··on Introducing DarkSky.net
It is a bit confusing that you have unit selection (for temperature and wind speed) in top-right corner, and then separate for map. I thought it is broken before I noticed the other switch.
prohor··on Firefox 49 fixes sites designed with WebKit in mind, and more
Yes like this one - just dropping part of current SVG standard that was supported by all browsers. Without any notification and replacement it broke some sites. Why? Because it was too much code, low adoption and it is depreciated in SVG 2.0 draft.

https://bugs.chromium.org/p/chromium/issues/detail?id=539385

Page 1 of 4Next →