作者:Fenng 发布在 dbanotes.net.
读隽辰的译作《应需而变--设计的力量》,第二章的一个小节《新奇的陷阱》很有意思。书中举的例子是某个银行在个人业务服务网站提供天气信息(这当然是业务领导的异想天开)。如果你没看过这本书,你认为银行提供这个服务有价值麽?
答案是这是个糟糕的产品设计。尽管这东西看起来应该有价值,用户怎么能不需要天气预报呢? 是的,用户需要天气预报,但是银行业务和天气有什么关系呢? 没有关系。所以这个服务其实就是个奇怪的混搭。一个新奇的服务或者功能看起来似乎应该能起到该领导预想的作用。但实际上,用户很难体会您的"用心良苦"。做新奇的而无用的东西简单,而对用户更有用的东西做起来反而更难。
这让我想起昨天看到的一篇李宁公司销售专家的一处细节,"放弃了大批量采购大黄、大紫服装的打算,其选择的颜色几乎无一例外都是蓝黑白三种颜色。什么样的颜色最终会进入减价区?──所有那些古怪的颜色。"。什么产品会最终被用户抛弃? 所有那些自作聪明的"创新"。这或许会对我们有点启发吧。
处处讲究创新的公司,各个都挖空了心思研究新产品,而不改进已有产品、不提升既有产品对用户的亲和力、不提升已有产品的价值,就变成了熊瞎子掰苞米。如果是遵循战略的创新,那可能算作真正的创新。否则的话,所谓的创新不过是一种炫技和自我满足罢了。写到这里,似乎和标题没什么关系嘛。其实我要说的是,如果不犯这些错误,那可能需要把用户的真正体验作为一种战略。而不是把所谓的创新作为战略--毕竟这么做的人和公司太多了。
在贝塔咖啡馆的读书笔记一则。不求读遍架上藏书,但求读一本书有所思,有所得。
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DBA Notes 理念: 用简约的技术取得最大的收益...
When Wolfram|Alpha launches later today, it will be one of the most computationally intensive websites on the internet. The Wolfram|Alpha computational knowledge engine is an "answer engine" that is able to produce answers to various questions such as
Wolfram|Alpha excels at different areas like mathematics, statistics, physics, engineering, astronomy, chemistry, life sciences, geology, business and finance as demonstrated by Steven Wolfram in his Introduction screencast.
There is no way to know exactly how much traffic to expect, especially during the initial period immediately following the launch, but the Wolfram|Alpha team is working hard to put reasonable capacity in place.
As Stephen writes in the Wolfram|Alpha blog Alpha will run in 5 distributed colocation facilities. What computing power have they gathered in these facilities for launch day? Two supercomputers, just about 10,000 processor cores, hundreds of terabytes of disks, a heck of a lot of bandwidth, and what seems like enough air conditioning for the Sahara to host a ski resort.
One of their launch partners, R Systems, created the world’s 44th largest supercomputer (per the June 2008 TOP500 list). They call it the R Smarr. It will be running Wolfram|Alpha on launch day!
Dell is another of the launch partners with a data center full of quad-board, dual-processor, quad-core Harpertown servers. What does it all add up to? The ability to handle 175 million queries (yielding maybe a billion) per day—over 5 billion queries (encompassing around 30 billion calculations) per month.
Watch a live webcast of the Wolfram|Alpha system being brought online for the first time on
The Genius behind Wolfram|Alpha is Stephen Wolfram. He is best know for his ambitious projects: Mathematica and A New Kind of Science (NKS).
May 14, 2009 marks the 7th anniversary of the publication of his book A New Kind of Science. Stephen explains is his blog post: But for me the biggest thing that’s happened this year is the emergence of Wolfram|Alpha. Wolfram|Alpha is, I believe, going to be the first killer app of NKS.
Congratulations Stephen!
I want to make this Friday a bit more interesting - how do you feel to train a bit in InnoDB data recovery techniques.
I have .ibd datafile which was created by query
CREATE TABLE `tryme` ( `email` mediumblob, `content` mediumblob ) ENGINE=InnoDB … (SOME PARAMETERS SKIPPED) …;
and I inserted one record into this table with email address and English sentence into field (content). Some transformation where applied to both fields so just HEX viewer may not help you there.
Size of meaningful de-transformed content is
length( … (content) … ) = 15.
Can you recovery both email and content fields ? To add some competition I want to give a prize for winner, first who sends content (meaningful English sentence) to given email - will receive our book “High Performance MySQL” 2nd edition, or if he has already this book or just hate it by some reason - I can propose Amazon 25$ Gift Card as replacement.
File tryme.ibd you can download here http://mysqlperformanceblog.com/files/contest/tryme.ibd. Size 65536 bytes. md5sum a53d3ee3f3a33854f21b5f550ae53e18.
Entry posted by Vadim | 2 comments
An interesting post on DataCenterKnowledge!
“我自发愿,不至天竺,终不东归一步” - 《大慈恩寺大唐三藏法师传》
上海到敦煌没有直飞航班。
为了今天(5月15日)能在敦煌和大部队会合(GOD,真是大部队,200多人杀进戈壁!),我只好5月14日从上海先飞到兰州,然后半夜飞到敦煌。
我住的莫高宾馆一晚只要108元。别小看这个三星宾馆,他们服务态度极好,半夜派司机和导游到机场接我,在宾馆前台的液晶屏幕打上“热烈欢迎贵宾刘润下榻”,赠送早餐,最重要的是,房间里居然有宽带,还免费!
中午才集合,所以我早上就出来晃一圈。敦煌市酒泉下面的一个县级市,只有18万人口,市区只有3万人,很干净有历史气味。公共汽车站,有点古色古香吧。我有点喜欢敦煌这个地方了。19日晚上徒步完就从瓜洲回到敦煌,如果我还走得动,我还要去莫高窟、鸣沙山、月牙泉、阳关看看。
他们的酒店也都像是用沙捏出来的。
中午,组委会会安排车辆把我们的行李和我们运到瓜洲,我们的出发地点是N40°08′29.6″,E94°40′40.4″,海拔1131米。从敦煌出发去瓜洲,终于向营地进发了。
瓜洲宾馆已经准备好了。瓜洲真的很小,250人就已经住不下了,十几个人只好住在敦煌。每个人的床头,有一张印刷了这两天行程安排的明信片。
我和我的行李准备好了,戈壁挑战赛,来吧!
下午5点,开会!做一些必要的赛前培训,比如脚上的水泡怎么产生的,登山杖怎么用,一天要喝多少水、怎么喝,遇到困难怎么联系救援队等等。
十家商学院。我虽然参加,但不是代表复旦商学院,这是只针对EMBA的比赛。我和组委会商量后,他们同意让我以“观察员 - 合作伙伴”第十一队的名义参加全程“挑战”,但是不“赛”。我的个人成绩也会记录。感谢组委会做出的特别安排!
呵呵,我要多走,多观察。
这个活动我越来越喜欢。这是第五年了。创始人是曲向东。他在践行酒上很感慨。第一年20多人,第五年250多人。
我们一共有三个观察员,居然都是科技公司,从左到右,谷歌,百度,微软。
践行酒结束了,明天就真的要动真格的了。我承诺,一定走完全程。
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