1.shard优化（自备梯子）
https://joecwu.medium.com/%E5%96%AC%E5%8F%94%E6%95%99-elastic-30-elasticsearch-%E7%9A%84%E5%84%AA%E5%8C%96%E6%8A%80%E5%B7%A7-4-4-shard-%E7%9A%84%E6%9C%80%E4%BD%B3%E5%8C%96%E7%AE%A1%E7%90%86-a8b0fc0d21a9
2.es中的语言模型
https://www.elastic.co/cn/blog/language-models-in-elasticsearch
3."buffer flush took longer time than slow_flush_log_threshold."解决方案 https://stackoverflow.com/questions/64558014/buffer-flush-took-longer-time-than-slow-flush-log-threshold
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本文地址：http://elasticsearch.cn/article/14127
本文地址：http://elasticsearch.cn/article/14127
