MongoDB Intro

Connect to mongodb: $ mongo
show dbs;
db.<collection>.stats(1024000000) # gb – ref
db.<collection>.find({},{<field>:<value>}).sort({<field>:1}).limit(5); # find top 5
db.<collection>.find({},{<field>:1}).sort({<field>:-1}).limit(5); # find bottom 5
db.<collection>.find({<field>:{ $lt: <val>}},{<field>:1}).count(); # count matches
db.runCommand({compact:'<collection>’}) # compact collection

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