https://www.dengnz.com/2019/06/16/mongodb-a-simple-command-can-improve-the-query-performance-dramatically/ 昨天，今天，明天，每天的每天，都多懂一点点... Fri, 20 Sep 2019 10:21:59 +0000 hourly 1 https://wordpress.org/?v=6.5.4 https://www.dengnz.com/2019/06/16/mongodb-a-simple-command-can-improve-the-query-performance-dramatically/#comment-1539 Fri, 20 Sep 2019 10:21:59 +0000 https://www.dengnz.com/?p=1875#comment-1539 db.messages.getIndexes() can be used to check all the indexes

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