mongodb - 我是否需要像 RDBMS 一样在一段时间后重新索引 MongoDB 集合

Question

我想获得一些关于重新索引 MongoDB 的知识。请原谅我问一些主观的问题。

问题是:MongoDB 是否需要像我们为 RDBMS 所做的那样定期重新索引，或者 Mongo 自动管理它。

感谢您的反馈

Answer 1

Mongodb takes care of indexes during routine updates. This operation may be expensive for collections that have a large amount of data and/or a large number of indexes.For most users, the reIndex command is unnecessary. However, it may be worth running if the collection size has changed significantly or if the indexes are consuming a disproportionate amount of disk space.

Call reIndex using the following form:

db.collection.reIndex();

引用:https://docs.mongodb.com/manual/reference/method/db.collection.reIndex/