kevan

22 ms·

181.
by kevan 9y ago
>Why use SNS/SQS when there are free pubsub/message buses out there? Free is never really free. There's always a tradeoff in engineering time and money when you choose to run your own stack instead of paying to use a stabl
182.
by kevan 9y ago
They're claiming the same 11 9s durability that S3 does. I'd be pretty suspicious of that claim without a track record but it looks like Wasabi's founders come from Carbonite. Bring on the competition, commoditization of fund
183.
by kevan 9y ago
Ah, so now it just sounds like a textbook case of alarm fatigue. That's a standard problem at every company in the world, this case just happened to cause a very high publicity outage.
184.
by kevan 9y ago
I can understand not doing butts in chairs 24/7, but I'm really surprised they managed to make it to that scale without adding paging escalation. If someone doesn't respond after X minutes then page their manager. Repeat unti
185.
by kevan 9y ago
They've been actively working on that for almost a decade [1]. Most (all?) cushioning in my packages is now heavy brown paper or plastic air bags, a significant improvement from the days of packing peanuts and bubble wrap. I'd lik
186.
by kevan 9y ago
Whoops, I stated that backwards. My time is more valuable than the CPU's most of the time.
187.
by kevan 9y ago
We also shouldn't discount it just because Python is usually fast enough (all my personal projects are in Python). Developer time is cheaper than hardware 99% of the time. For the 1% that are running millions of requests per second thr
188.
by kevan 9y ago
Amazon is pretty strong on this front too, the most recent public example is the S3 outage and postmortem[1]. >Unfortunately, one of the inputs to the command was entered incorrectly and a larger set of servers was removed than intended.
189.
by kevan 9y ago
>This will not work at scale in DynamoDb. I don't think we're getting the whole story from the author. I'm not the biggest fan of Dynamo either for reasons I won't get into here, but this type of workload is exactly w
190.
by kevan 9y ago
Both hypotheses sound reasonable to me, I'd like to see some data on this type of thing.
191.
by kevan 9y ago
The reason I usually hear: Good engineers almost always have jobs and usually aren't looking to change. When large layoff events happen good and bad engineers lose their jobs. This gives other companies an opportunity to recruit better
192.
by kevan 9y ago
>90% of our 250 million daily requests get handled in less than 10 milliseconds. Minor nit, but with that level of traffic I'd expect you to be bragging about P99.99 latency, not P90.
193.
by kevan 9y ago
Yep, that's the one. I hope it works out, building something is a lot less stressful knowing you already have your first 5/25/100 customers.
194.
by kevan 9y ago
This already exists, but I can't remember the name. In the last month or two there was a Show HN for matching small business and potential customers. The idea was that customers pledge what they're willing to pay (e.g. I will pay
195.
by kevan 9y ago
> Fortunately it doesn't have the authority to do anything important. Anyone who lives in a northern climate might disagree with that.
196.
by kevan 9y ago
Counting website users isn't a great metric for Amazon because a lot of the traffic is from AWS. But Amazon has been successfully running on a service oriented architecture for about 15 years now.
197.
by kevan 9y ago
It only hit 1.0 6 weeks ago[1], I don't think we'll have a good sample size of prod usage until the end of 2017 at the earliest [1] https://www.cockroachlabs.com/blog/cockroachdb-1-0-release/
198.
by kevan 9y ago
Travis does control the majority of voting shares, no one can force him to step down....on paper. The real world is a bit more complicated than that.
199.
by kevan 9y ago
I don't know what their exact process was, but I'd guess there was just a non-tech phone screen before the onsite. It's a tricky balance, some people get insulted if you ask them to complete a pre-screen coding exercise. &quo
200.
by kevan 9y ago
Exactly. As an interviewer I don't get any data if you have an algorithm memorized and throw it on the board. I'm trying to assess critical thinking and problem-solving skills, I've voted to hire many people who clearly had n
201.
by kevan 9y ago
As an interviewer, sometimes I feel a little silly having to ask a candidate super basic things like what the runtime complexity is for inserting an item into a list or array. But then a third of candidates that I interview fail pretty badl
202.
by kevan 9y ago
>Use proxies to your advantage At my last gig we used this exact strategy to replace a large ecommerce site piece by piece. Being able to slowly replace small pieces and AB test every change was great. We were able to sort out all of the
203.
by kevan 9y ago
It wouldn't surprise me if there was higher variation in program difficulty for CS because the field is younger and doesn't have the level of standardization that traditional engineering fields have (ABET), but we need real data t
204.
by kevan 9y ago
I don't think it's fair to say that computer science isn't hard when you openly admit that you didn't go into any depth in the topics. That's like me claiming the field of Mathematics isn't very hard because th
205.
by kevan 9y ago
Step 2 in this analysis: Would you be able to get any of those accounts with a low credit score? I'm pretty sure when I opened my Schwab checking account they ran a credit check.
206.
by kevan 9y ago
>these prepaid cards are a very convenient lifeline to many people who would otherwise be shut out of the system. On that subject, an interesting result of that lack of access is the existence of subprime retail, Bluestem Brands being a
207.
by kevan 9y ago
This is definitely the sort of thing you'd want to gather data on. It's plausible that it could save Terabytes of bandwidth per day at Facebook/Google scale.
208.
by kevan 9y ago
Nothing. The comment I replied to was explicitly about local officials, not the federal government.
209.
by kevan 9y ago
If a police officer pulls me over and finds that I was driving without a license, they aren't going to let me drive away and file a case the next day. They're going to impound my car. Following that same logic, if a jurisdiction r
210.
by kevan 9y ago
If those local officials were issuing arbitrary fines and illegally impounding cars I'd agree with you. But they weren't. Those local officials were enforcing the laws of their jurisdictions, which Uber was trying to circumvent.

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