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Flickr and adding database capacity

One of the Flickr engineers was nice enough to blog about their general process for adding capacity to their database backend. Seems the process went from a straight 20-hour table alter process to a more staggered but sleep fulfilling approach.

The newer approach does seem to require having a certain set of extra capacity to handle taking some machines offline and performing a pretty long offline operation while still continuing to run.

Read it yourself

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