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by fizx
2967 days ago
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Because Lucene wasn't good at near-realtime in 2009 or so, Twitter's original (acquired via summize) search was written in mysql. It might have even been a row for every token, not quite sure. IIRC, when we moved to a highly-customized-Lucene-based system in 2011, we dropped the server count on the cluster from around 400 nodes to around 15. |
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