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May 06 2011

Google Research Publication: Chubby Distributed Lock Service

We describe our experiences with the Chubby lock service, which is intended to provide coarse-grained locking as well as reliable (though low-volume) storage for a loosely-coupled distributed system. Chubby provides an interface much like a distributed file system with advisory locks, but the design emphasis is on availability and reliability, as opposed to high performance. Many instances of the service have been used for over a year, with several of them each handling a few tens of thousands of clients concurrently. The paper describes the initial design and expected use, compares it with actual use, and explains how the design had to be modified to accommodate the differences.

October 28 2010

ZFS Cheatsheet · Col's Tech

The three primary goals of ZFS are:

1. Highly scalable (128-bit) data repository
2. Ease of administration
3. Guaranteed on disk data integrity

October 26 2010

August 23 2010

Thoughts about this DIY-Thumper and storage in general - c0t0d0s0.org

But there is another misunderstanding: There is no unimportant data, data is important or it's outdated, but then it was important at a certain point of time. When it isn't or wasn't important you wouldn't have stored it on disk. You can't classify data in important or unimportant. But you seperate in different classes of needed availability. There is data which you need it at high speed at any time and there is data that you need with a low frequency and it's sufficient to have it after minutes, hours, days.
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