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Lessons Learned: Sharding for startups

Startup Lessons Learned

Using memcacheds multiget, which allows the fetching of many keys in parallel, I have written code to aggregate all the shard lookups for a given page and prefetch them, reducing the overhead even further. The mappings never change (unless you build a data migration tool, in which case they change rarely) and so are easy to cache.

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From Nothing To Something. How To Get There.

techcrunch.com

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