pushrax

24 ms·

211.
by pushrax 12y ago
For sure, it's definitely not the ideal interview problem. My intended argument was just that it's not an unfair interview problem. As an aside, I don't think it's that unlikely to come up with a dynamic programming solu
212.
by pushrax 12y ago
It's a good interview question for the same reason any question is: it allows you to see how the interviewee thinks and approaches a problem (if they haven't seen it before). If they have seen it before, you can see how well they
213.
by pushrax 12y ago
The knapsack problem is the canonical dynamic programming problem. Any decent combinatorics class should touch on these concepts at some point.
214.
by pushrax 12y ago
It's pretty clearly a play on words...
215.
by pushrax 12y ago
Then it's just a more complicated hash function.
216.
by pushrax 12y ago
Looks a bit like a one person shop – not exactly what you're looking for while building a high availability system.
217.
by pushrax 12y ago
Awesome, didn't realize that! Will definitely be using it.
218.
by pushrax 12y ago
If you want to cut down on DNS-induced latency, Route 53 is a fairly good option. Their latency-routed DNS doesn't perfectly map to all geographical zones, but it works fairly well for DigitalOcean's locations. I wish it was easie
219.
by pushrax 12y ago
CloudFlare's hit rate is predictably terrible for large binary files. We actually use DigitalOcean + Varnish + S3 for serving downloads from mods.io, since the files are relatively big and the site has such a low margin. Traditional CD
220.
by pushrax 12y ago
Managing the infrastructure is definitely where it falls short, but if you can get it done quickly it can be very cost-efficient for smaller projects. Three $5 DO boxes can easily handle > 1TB per month, which will cost over $100 on most
221.
by pushrax 12y ago
Actually, with DigitalOcean, you get quite a lot of bandwidth for the price. Additionally, their transfer limits are high (1TB for the $5 instances), and overage is only $0.02/GB. If you combine this with something like Route 53's
222.
by pushrax 12y ago
Defers are still called when the stack is unwound due to a panic. It's standard practise to clean up resources with a defer, so maybe it wouldn't be too unreasonable if you're mainly dealing with the standard libraries.
223.
by pushrax 12y ago
Do you have AdBlock or the like?
224.
by pushrax 12y ago
Cool, nice work! I didn't actually look at the benchmark and was just making (perhaps poor) assumptions. I'd imagine it does come with a nice little performance boost though?
225.
by pushrax 12y ago
In addition, if you were to replace the Rails router with a Ruby trie implementation, it would be even faster. (not that this is encouraged)
226.
by pushrax 12y ago
Yes, of course. That's why it's a successful "man in the middle attack" of sorts. If the cert wasn't trusted then it would mean nothing.
227.
by pushrax 12y ago
I would call this a "self-induced man in the middle attack". You're telling your computer that cloudflarechallenge.com is his server.
228.
by pushrax 13y ago
Yep! There were a bunch of us who wrote GPU "miners" (mostly OpenCL). I was intending to open-source mine at one point but never got around to it. At the end of the challenge, the network was hashing ten digits (i.e. 000000000 pre
229.
by pushrax 13y ago
The $10 backers didn't receive anything other than a pat on the back.
230.
by pushrax 13y ago
I don't understand your reasoning – the point of selling equity is to have more money available for immediate use. If they had followed this path, they might have raised even more capital.
231.
by pushrax 13y ago
Well, many Ruby webapps use erb, which is basically the same thing.
232.
by pushrax 13y ago
The ?q= doesn't cause the referrer to get set properly.
233.
by pushrax 13y ago
Here's a direct link using Google as the referrer: http://www.google.com/#q=Netflix+Agrees+to+Pay+Comcast+to+En...
234.
by pushrax 13y ago
For purposes of easy clicking, here's the same link without the space: http://www.google.com/#q=Netflix+Agrees+to+Pay+Comcast+to+En...
235.
by pushrax 13y ago
what.cd doesn't use CloudFlare, but yeah they've been under attack
236.
by pushrax 13y ago
HTTPS means PG-13 in the UK's network filter?
237.
by pushrax 13y ago
https://bitpay.com/bitcoin-exchange-rates