Template
single collection
multiple collections
mgodatagen
update
indexe
explain
Stage
Database
bson
mgodatagen
[{"notification":"Hello","messages":[{id:"1"},{id:"2"},{id:"3"}]},]
Query
db.collection.update({"notification":"Hello"},{"$push":{messages:{"$each":[{id:"4"}],"$sort":{id:-1}}}})
Result