Software engineer by trade. I make video games in my free time.
*The views expressed on this blog are my own and do not necessarily reflect the views of my employer*
Wow. Bing
is completely and utterly down right now and has been for several minutes.
30 minutes of downtime, this is why Bing is Not Google..
Excellent set of distributed systems rules of thumb:
o L1 cache reference 0.5 ns
o Branch mispredict 5 ns
o L2 cache reference 7 ns
o Mutex lock/unlock 25 ns
o Main memory reference 100 ns
o Compress 1K bytes with Zippy 3,000 ns
o Send 2K bytes over 1 Gbps network 20,000 ns
o Read 1 MB sequentially from memory 250,000 ns
o Round trip within same datacenter 500,000 ns
o Disk seek 10,000,000 ns
o Read 1 MB sequentially from disk 20,000,000 ns
o Send packet CA->Netherlands->CA 150,000,000 ns
Zippy eh?
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- Manage SVN repositories on your iPhone
- Use your iPhone to backup your SVN repositories
- Track your projects at Work, College or even on Holiday
- Edit your source code on the move
- Monitor When, Why, What and by Who changes were made to your projects.
- Ability to any Revert changes made
Yes, there's an app for that too..
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The software business learned that in the early 1980s, when companies like VisiCorp showed that although the words "software" and "publisher" fit together, the underlying concepts don't. Software isn't like music or books. It's too complicated for a third party to act as an intermediary between developer and user. And yet that's what Apple is trying to be with the App Store: a software publisher. And a particularly overreaching one at that, with fussy tastes and a rigidly enforced house style.
A very interesting take on the Apple App Store approval process, by Paul Graham. You should stop whatever you are doing right now and go read the whole thing.
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