elasticsearch为什么检索快？

如何快速检索？

https://www.infoq.cn/article/database-timestamp-02/?utm_source=infoq&utm_medium=related_content_link&utm_campaign=relatedContent_articles_clk

对比mysql

https://www.cnblogs.com/zxporz/p/11777190.html

算法中的O(1), O(n),O(logn), O(nlogn)

https://blog.csdn.net/Yanzudada/article/details/101679003