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mojuba
2007-04-23T20:10:11
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I'd choose JavaScript instead, since it already has most of what he explained.
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madanella
2007-04-23T20:10:39
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I like the potential ability to enable a truly wireless home environment where electronic devices all use wireless tech in place of physical cables. Speakers would be the first thing I would want to receive wireless power in addition to the wireless data signal.
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Readmore
2007-04-23T20:10:46
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So what we need is a DB that stores itself completely in memory and only writes to disk every Nminutes?
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paul
2007-04-23T20:13:25
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No, it can write continually, but in a sequential fashion.
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abstractbill
2007-04-23T20:14:00
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"For sequential access, DRAM is about 62x the speed of disk -- it's slower, but only by a few orders of magnitude."<p>Shouldn't that be "it's <i>faster</i>"?<p>Excellent post otherwise, btw.
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paul
2007-04-23T20:16:10
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Fixed. Thanks
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Sam_Odio
2007-04-23T20:16:13
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I think he meant the disk, not the DRAM, is slower.
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akkartik
2007-04-23T20:16:40
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"The road to wisdom? Well, it's plain<p> And simple to express:<p> Err<p> and err<p> and err again<p> but less<p> and less<p> and less."<p>-- Piet Hein via Don Knuth and Ryan Brush<p><a href="http://toomuchcode.blogspot.com/2007/02/imperfect-approximation-of-perfect-code.html">http://toomuchcode.blogspot.com/2007/02/imperfect-approximation-of-perfect-code.html</a>
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Readmore
2007-04-23T20:17:37
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I just read up on memcached, now I get it. Very nice ;)
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madanella
2007-04-23T20:20:03
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This issue is fundamental to the current web 2.0 startup approach of fast and cheap feature development. It becomes more and more about marketing, branding and user experience and less and less about engineering.
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dfranke
2007-04-23T20:22:07
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If your entire database fits in memory, then any decent DBMS will cache it all there, write changes back to disk at such time as to have a minimal impact on performance, all the while ensuring atomicity if someone kicks out the plug while it's in the middle of flushing the buffer. If you're not using a DBMS and you can still say all that about your own solution, you've probably put a lot of work into reinventing the wheel.
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Readmore
2007-04-23T20:24:10
Anyone have any info on how Facebook is setup (Server infrastructure wise)?
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myoung8
2007-04-23T20:25:31
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"Passion knows no logic."
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SwellJoe
2007-04-23T20:27:05
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The hits:<p>Buchheit<p>Levchin<p>Partovi brothers<p>Graham<p>McAdoo<p>Recent founders panel (just the end bit where Alexis beautifully zings Paul, but you need to see the slides...I dunno if they're available)<p>The misses (misses because I expected a lot more from these guys, not necessarily because these were worse than the rest of the non-hits--both really smart guys with a lot of success under their belt):<p>Kapor (should have been half an hour, like everyone else)<p>Zuckerberg (age discrimination isn't really something useful to learn, as we all probably have enough of that built right in)<p>Though, I might say that if you do watch one of the misses, you need to watch the other. They're like Olbermann and O'Reilly squaring off on issues like hiring, firing, employee selection, etc. By the time you suffer through both talks you might have a balanced view.<p>From the 06 batch I vividly remember Kraus, Graham, and Fletcher being fantastic. Kraus and Fletcher are always worth listening to.
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nostrademons
2007-04-23T20:27:35
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So, how do write-intensive sites like LiveJournal handle their updates? I was under the impression that LJ was all memcached + sharding + master/master pairs for the shards.<p>How do you handle features that rely on frequent UPDATE statements, like say a hitcounter? Is UPDATE LOW PRIORITY (MySQL) enough, or should you work out some application-specific caching/batching mechanism and perform all your updates at once?
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paul
2007-04-23T20:33:23
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Ensuring atomicity is actually very easy.<p>Databases SHOULD do these things, but I haven't seen any evidence that the popular ones do. Feel free to post actual measurements for updates per second from your db.
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jkush
2007-04-23T20:35:21
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<a href="http://www.facebook.com/jobs.php">http://www.facebook.com/jobs.php</a><p>Looking at this you can see MySQL and PHP so I'm guessing at the highest level, a LAMP architecture. Don't know how they go about web farming, scaling though.
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SwellJoe
2007-04-23T20:36:07
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Most investors do not invest in competing or significantly overlapping companies. There are a few exceptions (Ron Conway), but it's rare enough that they feel like making that clear on every possible occasion.
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jkush
2007-04-23T20:37:16
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Actually - more information here:<p><a href="http://blog.facebook.com/blog.php?post=2223862130">http://blog.facebook.com/blog.php?post=2223862130</a><p>From the blog post:<p>"Almost all our servers are running open-source software. Our Web servers use Linux and Apache and PHP. Our database servers run MySQL. We use memcached to help keep the site snappy. Some of our behind-the-scenes software is written in Python and Perl and Java, and we use gcc and Boost for the parts that aren't. Our developers use Subversion and git to keep track of their work. The list goes on—like many Web sites, we use it from top to bottom."
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pageman
2007-04-23T20:38:00
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Chance favors the prepared mind - Louis Pasteur
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dfranke
2007-04-23T20:45:40
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How are you handling atomicity? Are you doing full-out undo/redo logging, or just something involving writing to a seperate file and then (atomically) retargeting a symlink?<p>I'm mostly an academic, so I can tell you a lot more about how things are supposed to work than about how they actually do. The only high-traffic DBMS with real users to which I can easily get access is MS-SQL, which doesn't inspire me to any leaps of faith. But once I finish building my new desktop system (with spiffy RAID array) I'll rig up some benchmarks on MySQL and PostgreSQL.
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aston
2007-04-23T20:45:49
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Totally understandable. I'll do my best to re-remember all the random ideas we threw down.
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Readmore
2007-04-23T20:47:17
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that's good stuff, Thanks!
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aston
2007-04-23T20:49:16
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Prolly a little bit of Thrift for client/server distribution. <p><a href="http://blog.facebook.com/blog.php?post=2261927130">http://blog.facebook.com/blog.php?post=2261927130</a>
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wschroter
2007-04-23T20:53:47
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"I only have one hour of pure brilliance per week. Unfortunately I have to work 80 per week to find the one."<p>- Wil Schroter
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paul
2007-04-23T20:54:04
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Just write each transaction as a single record to your transaction log file, ensure that only whole records are replayed (like with a checksum), and you're done. Since there are no b-trees or other complicated structures on disk, the problem gets a lot easier.
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edw519
2007-04-23T20:54:09
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Do much. Say little. Write nothing. (Except software)<p>JP Morgan (I added the bit about software.)
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jkush
2007-04-23T20:55:52
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You bet.
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bootload
2007-04-23T21:05:38
Growth, innovation, scaling & pace of life in cities
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http://www.pnas.org/cgi/content/abstract/0610172104v1
1
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Mistone
2007-04-23T21:18:39
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The purpose of business is to create and keep a customer. Peter Drucker
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Mistone
2007-04-23T21:20:31
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The difference between great people and everyone else is that great people create their lives actively, while everyone else is created by their lives, passively waiting to see where life takes them next. The difference between the two is the difference between living fully and just existing. Michael Gerber<p>
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waleedka
2007-04-23T21:34:31
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It's on my account page.
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Prrometheus
2007-04-23T21:39:51
Great Startup Schools?
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Prrometheus
2007-04-23T21:40:01
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In preparation for a career as a startup founder, I’m looking at grad schools right now for several reasons:<p>1) Sharpen my skills 2) Meet like-minded people 3) Learn cool things<p>Obviously, number 1 is Stanford, the home of Google. And number 2 is MIT. Does anybody have good recommendations for numbers 3, 4, and 5?
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catfish
2007-04-23T22:03:12
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Cheap, fast, or accurate.<p>Pick two.
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mojuba
2007-04-23T22:16:01
null
Ok, isn't Web 2.0 a similar marketing fluff? I understand with all similarities it's not the same. I'm sure it is much better now, but add one more new factor, like the failure of Windows Vista for example, and you may have that critical mass for a new collapse.
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npk
2007-04-23T22:17:31
null
Hmm, this is an interesting take on graduate school. I'm not convinced that graduate school is the only or best way to accomplish your goals. Why not move out to CA and join a startup?<p>Assuming you mean a PhD, I'll give you the following advice: If you really don't <i>love</i> what you're doing, graduate school hurts. Personally, it would have been hard for me to come into a program, thinking that I was going it to start a startup and not do research for the rest of my life.<p>A masters will certainly help your career within bigger companies, but do startups care? Does one or two more years of courses really teach you anything? I'm inclined to say no.<p>Finally, you realize your question is kind of absurd? If you mean a PhD, you should think about what excites you, figure out what labs are doing what you are interested in, and go work for those labs. The school is secondary. I'm sure you'll find good labs at stanford, mit, cmu, caltech and berkeley.
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mojuba
2007-04-23T22:18:30
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After all, the guy coined a new term - Bubble 2.0, and I liked it very much.
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dfranke
2007-04-23T22:19:55
null
It sounds like you're describing very-nearly a textbook implementation of redo logging. I think what's making things easy for you is not the fact that you're using flat files, but rather that the entire contents of a transaction fit in memory. Most of the complexity involved in a commercial DBMS's log implementation stems from dealing with how to handle a transaction that modifies 20GB of data when you have 8GB of memory.<p>Edit: and yes, the irony is noted that I'm telling a Googler that he's not working with enough data.
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dawie
2007-04-23T22:23:13
15 Startup Commandments
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http://www.startupping.com/forums/showthread.php?t=347
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dawie
2007-04-23T22:24:17
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Rule number 1 - Start - Experience is the best teacher
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create_account
2007-04-23T22:24:52
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Shh... don't tell all the people applying to YC!
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create_account
2007-04-23T22:26:51
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But why weren't you able to introduce them to prospective buyers once they'd decided to sell?<p>Isn't that where a well-connected investment firm adds value?
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mattjaynes
2007-04-23T22:32:58
Video Podcasting Comes of Age with ON Networks
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http://www.readwriteweb.com/archives/video_podcastin.php
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mattjaynes
2007-04-23T22:35:16
Going to YC SFP: Big Head Labs
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http://www.bigheadlabs.com/2007/04/23/cue-that-song-from-augustana/
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bootload
2007-04-23T22:36:02
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<i>"... <a href="http://www.stonetemple.com/articles/interview-bryan-eisenberg.shtml">http://www.stonetemple.com/articles/interview-bryan-eisenberg.shtml</a> ...'</i><p>Update: <p>Oops. Got confirmation from a reliable source '<i>this is particular link is incorrect</i>'.
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sabat
2007-04-23T22:41:55
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"add one more new factor, like the failure of Windows Vista for example, and you may have that critical mass for a new collapse"<p>Forgive me, but I don't see the connection. How would the failure of Windows Vista do anything but <i>help</i> applications that run on the web? I can imagine some large things that could hurt this boom (economic collapse, maybe), but nothing small.<p>Web 2.0 has a lot of hype right now, but that doesn't make it marketing fluff. There is real substance here (and real profits, real innovation, and real users).<p>In contrast: here is a quick story about a company that I interviewed with in 1998. I don't remember the name; they were located South of Market in a really nice loft with lots of brick, glass, and chrome. Free lunch every day, free beverages, lots of perks. The business model: we are going to get your website's customers to fill out surveys. You are going to pay us for this. We will get the customers to fill out surveys by rewarding them with frequent-flier miles. I remember three things about this company, years later: how nice their loft was, how stupid and convoluted their business model was, and how arrogant they seemed to be about it. They acted like they were already a success.<p>In contrast, btw, the startup I did join was operating out of a cluttered office in Palo Alto that they'd got a really good deal on. Junk was everywhere, and the Founder/CEO asked me if I minded. I told him, "hey, it looks like a real startup." That company is still in business today. Frequent-Flier-Miles-for-Surveys, Inc: not so much.
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sabat
2007-04-23T22:45:16
null
... and this describes a bubble, how? This describes a boom.
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sabat
2007-04-23T22:47:13
null
Growth companies do not pay dividends, as a rule. The fact that these companies were having trouble getting anywhere near <i>profits</i> -- that was indeed a real problem. (Also, the fact that they were public at all was a real problem for them, since public investors want profits sooner than later.)
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mattjaynes
2007-04-23T22:51:08
null
Probably UT Austin, U of Washington, and UMich Ann Arbor would be the next ones (in no particular order).<p>Good luck to you. I considered grad school but decided that since my ultimate goal was to do a startup, that I would just put the money from grad school into starting a business. It's been the most educational few months of my life. There's no grad school that will be as educational as joining a good startup. Be sure to read pg's articles - they are invaluable for avoiding <i>very</i> common mistakes.
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mojuba
2007-04-23T22:53:28
null
Causes of some effect shouldn't necessarily be related, I was talking only about a critical mass, when causes add up.<p>I understand what you are saying otherwise.
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mattjaynes
2007-04-23T22:57:27
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"Make no little plans. They have no magic to stir men's blood and probably themselves will not be realized. Make big plans; aim high in hope and work, remembering that a noble, logical diagram once recorded will never die, but long after we are gone will be a living thing, asserting itself with ever-growing insistency. Remember that our sons and grandsons are going to do things that would stagger us. Let your watchword be order and your beacon beauty. Think big."<p>-Daniel Burnham, Chicago architect. (1864-1912)
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mattjaynes
2007-04-23T23:01:25
null
From the Scottish mountain climber W. H. Murray:<p>"Concerning all acts of initiative (and creation), there is one elementary truth the ignorance of which kills countless ideas and splendid plans: that the moment one definitely commits oneself, then providence moves too. A whole stream of events issues from the decision, raising in one's favor all manner of unforeseen incidents, meetings and material assistance, which no man could have dreamt would have come his way."
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mattjaynes
2007-04-23T23:03:19
null
Theodore Roosevelt:<p>"It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood, who strives valiantly; who errs and comes short again and again; because there is not effort without error and shortcomings; but who does actually strive to do the deed; who knows the great enthusiasm, the great devotion, who spends himself in a worthy cause, who at the best knows in the end the triumph of high achievement and who at the worst, if he fails, at least he fails while daring greatly. So that his place shall never be with those cold and timid souls who know neither victory nor defeat."
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startupdaze
2007-04-23T23:06:03
Much to do about "ster!"
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http://startupdaze.com/post/1169452
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mattjaynes
2007-04-23T23:06:36
null
"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great."<p>- Mark Twain<p>(Good case for moving to a startup hub)
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bootload
2007-04-23T23:10:32
Open Source Search (nutch)
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http://www.acmqueue.com/modules.php?name=Content&pa=showpage&pid=144&page=1
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usablecontent
2007-04-23T23:10:53
Dojo Toolkit Now Works Offline
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http://startupmeme.com/2007/04/23/dojo-toolkit-now-works-offline/
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nostrademons
2007-04-23T23:42:54
null
Congrats!
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run4yourlives
2007-04-23T23:43:17
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I didn't realize the game was over. :-)
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Sam_Odio
2007-04-23T23:53:51
OpenDNS adds short-cut service (very cool...)
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http://feeds.feedburner.com/~r/Techcrunch/~3/111390243/
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Sam_Odio
2007-04-23T23:56:17
null
If you haven't tried OpenDNS, it's worth checking out. They takes an old, boring technology and make it faster & more useable.<p>David Ulevitch, the guy behind it, also runs everydns.net. That's worth checking out too, if you run a server.
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rms
2007-04-23T23:58:57
Blood, Bullets, Bombs, and Bandwidth
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http://rezendi.com/travels/bbbb.html
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fuelfive
2007-04-24T00:03:52
null
I keep a file of these. Here are some of my favorites:<p>"In the long run, we only hit what we aim at." - Henry David Thorou<p>"The more you sweat in peace, the less you bleed in war." - Asian proverb<p>"No battle plan survives contact with the enemy." - Helmuth von Moltke<p>"No wind favors he who has no destined port." - Montaigne<p>"Never doubt that a small group of thoughtful, committed people can change the world. Indeed, it is the only thing that ever has." - Margaret Mead<p>"Real artists ship." - Steve Jobs
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rms
2007-04-24T00:06:02
null
This is the unabridged version of a piece that appeared in Wired a while ago.
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mattjaynes
2007-04-24T00:11:01
S3 performance from EC2 instances
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http://blog.awswebshop.com/2007/04/22/s3-performance-from-ec2-instances/
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brezina
2007-04-24T00:15:41
null
I'm pumped for Disqus. Use the time in Cambridge to focus on building a technology war-chest. You'll never find the time to focus on code the way you will during SFP.
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jamiequint
2007-04-24T00:29:52
null
I don't see it there...
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jamiequint
2007-04-24T00:31:24
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There's a difference between competing and cloning their service to the detail as soon as you lose a bidding war. I'm by all means a capitalist, but this somehow doesn't sit right with me.
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mattculbreth
2007-04-24T00:43:26
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This is a very good point. Some types of applications will find this scheme a bit difficult, though I'm in the midst of hacking through some POC work around it. I've got a database in the 100GB range potentially so it's a bit of a different domain.<p>I really think this concept works though for 8/10 applications which are using databases because, well, you've always used databases. Memory, save changes to flat files, read it all in during startup, it's really an elegant way to go about it.
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mattculbreth
2007-04-24T00:45:15
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I'm a Georgia Tech guy and we have a great CS program. But I'd go with the consensus here--get out there and join a startup. Maybe do that for a year, see how you like it. If you've already got startup fever in your blood going to grad school might not feel so good.
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zemaj
2007-04-24T00:57:26
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Link not working?
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gyro_robo
2007-04-24T00:59:21
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How about some symbol macro snippets?<p><a href="http://people.csail.mit.edu/gregs/ll1-discuss-archive-html/msg02226.html">http://people.csail.mit.edu/gregs/ll1-discuss-archive-html/msg02226.html</a><p><a href="http://www.economicexpert.com/a/RTML.html">http://www.economicexpert.com/a/RTML.html</a>
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rjam
2007-04-24T01:03:20
How long can it take for a blog to make some money?
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http://www.robertoalamos.com/how-long-can-take-for-a-blog-to-make-a-decent-income
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gyro_robo
2007-04-24T01:05:01
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Good info. Basically 10 MB/sec either way for a single transfer and 20 MB max combined for multiple.
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makimaki
2007-04-24T01:08:52
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Very useful article for anyone planning to make money from a blog..
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madanella
2007-04-24T01:12:22
Best language for interface development?
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madanella
2007-04-24T01:13:45
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Of course there's Java, Flash and javascript. What other options are there? Examples please.
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paul
2007-04-24T01:16:06
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Yes, exactly, they are solving a number of much harder problems. However, these problems are irrelevant to 99% of web sites. How often does Twitter need to perform a 20GB transaction?
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gyro_robo
2007-04-24T01:21:54
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Max Levchin is like the Energizer Bunny. See show #2 on NerdTV: <a href="http://www.pbs.org/cringely/nerdtv/shows/">http://www.pbs.org/cringely/nerdtv/shows/</a><p>He said when he's not doing a start-up he lays on the couch morose, whereas he's happy and enjoying life when he IS doing a start-up.<p>I infer that the secret of success is to link pleasure to working on your start-up and pain to NOT doing it. If your start-up feels like a grind then it's doomed. Fortunately, you can re-program your emotional responses via various techniques.<p>You pretty much want to do that regardless so that if you do strike it rich, you don't feel useless and indolent for the rest of your life afterward. The continued success stories are the people who were REALLY into what they did. For example, Bill Gates could have retired long ago; Michael Jordan didn't win one championship and decide that was all he wanted; Steve Jobs kept on going while Steve Wozniak checked out, relaxed, and got fat. (I love Woz, I just think if you're possibly the world's best at what you do, abruptly stopping can't be very fulfilling, even though I understand he did many other worthwhile things like teaching kids.)<p>
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gyro_robo
2007-04-24T01:26:31
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PHP: Choice of how many m/billionaires? <p>ColdFusion: MySpace<p>PHP: Facebook, Flickr<p>Python: YouTube, reddit<p>Lisp: Viaweb<p>Ruby: ?
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dshah
2007-04-24T01:29:11
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Glad some of you are finding the Website Grader tool somewhat useful. It started out as a simple experimental project (basically I wanted something to meet my own needs).<p>Since then, it's taken on a bit of a life of its own. <p>The algorithm is basically trying to to simulate the same kinds of things I look for when trying to assess a site (a combination of traffic, SEO, site structure, popularity and other things). I'm making another big update to the underlying software within the next week or so. <p>If you have ideas for improvement, please leave a comment (either here or preferably on the websitegrader.com site itself).
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vlad
2007-04-24T01:32:27
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"Raise your hand if you can do long division on paper, right now. Hands? Anyone? I didn't think so."<p>Is he serious? I knew how to do that in 3rd grade and a different version of it in 4th grade and on, and have never forgotten. How can somebody not know how to do long division? Please tell me I'm not the only one?
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omouse
2007-04-24T01:37:27
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I can barely remember. But I just did a simple problem on paper (123 / 4) and I've still got it! :P it's 30r3 or 30.75...I hope.
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vlad
2007-04-24T01:38:34
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Justin.TV has them :) But it's very spotty. Paul Graham's talk is available on Video I believe, on Google. Maybe I'm thinking of his last year's talk.
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BrandonM
2007-04-24T01:47:13
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If you wrote this to give back to the community, then I applaud you. Sorry to criticize.
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mike_organon
2007-04-24T01:59:26
Yahoo sued for informing China on dissidents
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http://www.cnn.com/2007/TECH/internet/04/18/yahoo.china.ap/
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waleedka
2007-04-24T02:05:03
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Opps. My bad. I put it in the 'email' field thinking it'll be displayed. Now I know better. Added it to my account now. waleed_ka ((AT)) hotmail.com.
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staunch
2007-04-24T02:12:58
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I think there'd be some period of 6-18 months where I'd truly do nothing but relax. Learn a new programming language really well. Travel and visit friends/family scattered across the globe. Then I think I'd end up doing some kind of startup hackery like Joe Kraus or PG.
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Goladus
2007-04-24T02:21:34
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I'm pissed that I'm forgetting discrete math. I loved it, but lost my textbook at some point.<p>I can still do long division but dividing 2651300296 by 46532 by hand is not on the list of Things I Want To Spend Any More Of My Life Doing.<p>Anyway Steve Yegge is my hero. He rips into Java and C++ better than anyone. I think my favorite is when he cited "Dr. Gary Larson's" definitive paper on static type systems.<p><a href="http://steve-yegge.blogspot.com/2006/10/egomania-itself.html">http://steve-yegge.blogspot.com/2006/10/egomania-itself.html</a>
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nostrademons
2007-04-24T02:28:02
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I think you mean multi-millionaires - basically all the billionaires based their companies on C and C++.
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staunch
2007-04-24T02:39:26
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Really great writeup Paul. I've been preaching "memory is magic" for the last couple years now -- since the capacity:price ratio got so good. Now I have a nice non-fluffy hacker post to send people to.<p>If there's any silver bullet to scaling most web apps it's properly utilizing gobs of memory. Pushing bytes from memory to your NIC is a pretty damn efficient operation.
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formerarsdigita
2007-04-24T02:43:06
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he didn't sell the company. he sued the company and they settled out of court. he made his money via legal action, not business or programming acumen. the sale was for pennies and was only done so that the VCs wouldn't look completely retarded for investing in the first place.<p>he didn't really have any choice but to retire. no investor will give him money and no programmer with any sense would work for him.
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AF
2007-04-24T02:43:17
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Is it? I think the documentation on the actual site is more complete. It will be nice when they just get one set of complete documentation.
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lupin_sansei
2007-04-24T02:59:16
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I don't know. Back in 1999 ACS was considered pretty ok. And his writings were the Joel/Paul back then.
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lupin_sansei
2007-04-24T03:02:42
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Are you sure it's not due to how your email headers and content look? I had to remove my X-Mailer "Mail-Sender" and supply a proper address with a name before Hotmail would stop putting the emails into spam.
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Goladus
2007-04-24T03:03:48
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Maybe they were really good granola bars. It was basically a joke. I can't speak for her, really, but looked to me like an ice-breaker comment to get everyone relaxed.<p>It might make more sense if you understand that no one in the room would care about taking granola bars.
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lupin_sansei
2007-04-24T03:05:59
Moore's Law and a Free Market in Childbirth
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http://www.mises.org/story/2540
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zemaj
2007-04-24T03:07:30
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nm - seems to be working now.
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dherman76
2007-04-24T03:13:41
Venture Capital compared to the music business
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http://www.darrenherman.com/2007/04/23/venture-capital-the-music-business/
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