[overview] mongodb

[Alice52]

version

1. 4.2
2. 4.4

index

ha

rerference

1. mysql&mongo 索引树: https://zhuanlan.zhihu.com/p/519658576

[Alice52]

resource

1. ReferenceCards15-PDF.pdf
2. MongoDB实战.pdf
3. MongoDB复制集环境搭建.pdf
4. MongoDB分片集群搭建.pdf

[Alice52]

1. sample

   
   show dbs;

use tutorial;

show collections;

db.createCollection("products");

db.products.insertMany([ { title: 'A', category_id: ObjectId('574d92332a2b10d7618b4575'), price: 30.23, rating:5 }, ]);

db.getCollection("collection").drop();

db.products.find();

db.products.createIndex({price:1}) db.products.getIndexes();

db.products.find({category_id:ObjectId('574d92332a2b10d7618b4575')}).sort({price:-1}).explain("allPlansExecution");