karterk

36 ms·

361.
by karterk 14y ago
No, it's very slow. If you use a SSD, it's manageable.
362.
by karterk 14y ago
But if you actually read through the github thread, you will see that DHH is going against conventional practice in this case.
363.
Why Not Events(awelonblue.wordpress.com)
2 points by karterk 14y ago|0 comments
364.
by karterk 14y ago
You need to find an actual problem that stretches what you know and demands you to dig deeper into areas of computer science that interests you. Reading theory and books won't get you far as you will realize that the real-world problems bri
365.
by karterk 14y ago
So the article does not give ANY information on what the author built and/or what specific things he learned. No idea how this is on the front page.
366.
by karterk 14y ago
As someone who has done a lot of scraping in the past - you just need to change the CSS classnames or re-design your pages once in a while :) This breaks a lot of automated bots that extract semantic meaning from a webpage by using html + r
367.
by karterk 14y ago
To never get overly attached to my tools - programming languages, frameworks, paradigms, patterns etc. and to always choose the right tool for the right job, by putting aside my own personal bias.
368.
by karterk 14y ago
If you're doing lots of reads, the L1 and L2 caches help things a lot. They are an order of magnitude faster than main memory access, so as you add more cores, this helps in the overall performance.
369.
by karterk 14y ago
The main stream languages currently do not offer enough abstraction for developers to make use of hardware parallelism effectively. Threads do get the job done, but nowhere as elegantly as I would want. Until that happens, we won't get to r
370.
by karterk 14y ago
Offline first is almost magical for end-users, since this is something quite contradictory to how people perceive the web. Having said that, it's also incredibly difficult to get it right. As others have pointed out, the major problem I fac
371.
by karterk 14y ago
Not really. Their last product (sortfolio) did not really do that well: http://37signals.com/svn/posts/3196-sortfolio-lives They do have a good reach and that will definitely help them, but the tablet market is now big enough for multiple
372.
by karterk 14y ago
I was part of a large migration that moved a significant amount of data from MongoDB to HBase recently. Along the way, I also spent significant time digging into Cassandra and Riak. I appreciate the effort and intention behind this article,
373.
by karterk 14y ago
The trick to hbase performance almost always relies on getting the row key and column qualifier design right. Your keys and qualifiers should be chosen to exploit bulk scans. If you have any specific questions, shoot me an email I can give
374.
by karterk 14y ago
If it weren't for iOS and the App Store I would have went to University I wouldn't write off things like that. Maybe you could have discovered something totally tangential but equally worthwhile somewhere else.
375.
by karterk 14y ago
OP probably means the chaining of several async calls. Atleast in Node, the convention is to bubble up an err object back if any of the functions throw up. If you let an exception to throw, then the Node process crashes. There is a global c
376.
by karterk 14y ago
I wonder why Twitter has never tried to do anything interesting with all the data they own. I can think of so many ways they can mine useful data from them (think of brand sentiment analysis). Or - how about exposing metrics like views, cli
377.
by karterk 14y ago
The major challenge though is to find good code to read. In my experience, reading and working with bad code has proven to be extremely valuable too. Until you realize why something is bad (e.g. extremely long methods), you won't apprecia
378.
by karterk 14y ago
Not everything that grows like weed is necessarily awesome. Just saying.
379.
by karterk 14y ago
Great - thanks a lot! Will definitely be trying it out for something I have in mind.
380.
by karterk 14y ago
To anyone wondering if they could do it to, the answer is yes. How did you go about marketing it?
381.
by karterk 14y ago
Scaling has a number of components to it - it's not just about the absolute number of requests. There are always trade-offs (read up about the CAP theorem). My experience with Mongo has been that it has very inconsistent performance. Such i
382.
by karterk 14y ago
The biggest lure of Mongo is that it gives you a nice SQL-like query API. So it's fairly easy to get started with, compared to other NoSQL alternatives. I primarly use it for small-medium size apps - when I know upfront that I will never ne
383.
by karterk 14y ago
Then, wouldn't 2-3K of guaranteed work be better than a lure of 7-8K? If you are looking at top-notch devs who can code and execute an idea from scratch, that's not a bad deal at all.
384.
by karterk 14y ago
Exactly. Sometimes, it pays to be detached. You can be passionate about something, but still be somewhat detached from it. The minute you let something/someone determine and define your life, you lose sight of the larger picture. And, the r
385.
by karterk 14y ago
Play is the closest - but it's nowhere near the maturity of Rails. One good strategy that I see a lot of companies adopt is to write a services layer in Java/Scala and then keep the front-end Rails app part light weight. This way, you get t
386.
by karterk 14y ago
The result, they say, is an infinitely scalable database that goes beyond what most NoSQL databases offer. No wonder NoSQL gets so much flake.
387.
Ask HN: Experience selling non-hosted web app?
8 points by karterk 14y ago|2 comments
388.
by karterk 14y ago
The reason for emailing you could also be to find out why you aren't using the app . Even if one ends up closing the account as a result, the information gained is valuable for improving the product.
389.
by karterk 14y ago
1. Primarily through the same book as you are reading. If you are already familiar with Java and the functional paradigm, the book will primarily help you see those concepts in Scala. 2. Scala is a pretty complex language. There are many wa
390.
by karterk 14y ago
For Hadoop, Apache's wiki is pretty comprehensive. It talks about both the internals of Hadoop and how to get it up and running with examples. Also there is no such thing as NoSQL. What databases are you looking to study specifically?

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