Just listened to Artur railing against squid and preaching the virtues of varnish. He quoted what most people quoted, which is how varnish performs serving out of *memory*. It must be nice to have a working set that small. Until someone can show me numbers of disk-intensive (meaning, full caches, LRU eviction churning all the...
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From this article on BusinesWeek: In addition, through its Data Center Solutions Group, Dell builds clouds, the large groups of computers whose collective power can be tapped remotely, via the Internet. Customers for DCS-built clouds include Yahoo! (YHOO), Facebook, and Akamai (AKAM) as well as big Chinese Internet companies like Baidu (BIDU), Tudou, Tencent Holdings,...
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So now there’s chapters 1-4 on Safari RoughCuts. Which means if you don’t mind shelling out the dough, you can take a look at what I’ve been getting up early for every day for the past few months. The working title is “The Art of Capacity Planning” and it’s meant to be a no-nonsense description...
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Thanks to Mark, squid’s got a patch I’ve been wanting for a gazillion years: time-to-serve statistics that don’t include the client’s location http://www.squid-cache.org/bugs/show_bug.cgi?id=2345 Normally, squid’s kept statistics that included the “time” to serve an object, whether it be a HIT, MISS, NEAR HIT, etc. The clock starts for this time when the first headers are...
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Here they are....
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Awhile back, I said I’d love to have a tool that would allow me to peek inside filesystem cache and tell me what files (or pages of files) are inside. Well Peter Zaitsev points to the fincore tool, which comes pretty damn close: you give it a file, and it will tell you which pages...
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After seeing Jesse’s great post on Radar (never knew about FreeConferenceCall, very cool!) about the quick and easy webops event communications, I thought I might put a post together on some of what we’re using at Flickr to keep track of things ops-related. Production Changes/Immediate Issues We have our configuration management schemes wrapped up in...
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Dear users of S3, EC2, and other ‘utility’ computing stuffs: Here’s a crude and completely oversimplified evolution of infrastructure needs of a growing website, with an assumption: Have you ‘outgrown’ your original use of utility computing, for whatever reason ? If so, what was the reason? Financial? Technical? Why I’m asking: I’m in the process...
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I’m probably late in getting to this, but seeing the article in the WSJ about the RAD project made me stop to take a look. It appears to be a collection of different projects, all relating to infrastructure deployment/management and various research topics surrounding it. Looks cool so far....
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I’m probably very late to this party, but I just discovered Dashboard Spy. Given the amount of “data porn” that folks in webops look at on a daily basis, this sort of stuff is pretty damn interesting. I’m especially loving the current trend of developing ‘business’ dashboards, since it can fit in quite nicely with...
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