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Cattell [6] maintains a great summary about existing Scalable SQL and NoSQL data stores. Hu [18] contributed another great summary for streaming datab 阅读全文
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Elasticsearch: Five Things I was Doing Wrong Update: Also check out my series on scaling Elasticsearch. I’ve been working with Elasticsearch off and o 阅读全文
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From Elasticsearch's website: The _source field contains the original JSON document body that was passed at index time. The _source field itself is no 阅读全文