Bulk insert.update in mongodb - mongodb

Question

Currently in my MongoDB collection I have this data
currentDataList = [{'id':1,'name':test1},{'id':2,'name':test2}]
but now I have a new data list with huge amount of data like
newDataList = [{'id':1,'name':a1},{'id':2,'name':a2},{'id':3,'name':a3}.....{'id':9999,'name':a9999}]
and I need to update this newDataList in my collection with insert if not exist/update if exist manner.
I do not want to update the documents one by one because it will take time.
Can anyone please suggest some solution for bulk insert/update in this case.

Answer 1

Update in bulk:
If you want to update in bulk you can use db.runCommand() with update command.
Command example:
db.runCommand({
update: "collectionName",
updates: [
{
q: { id: 3 },
u: { $set: { id: 3, name: "a3", newFields: "newField" } },
multi: true,
upsert: true
}, // the list goes here
{
q: { id: 11 },
u: { $set: { id: 11, name: "a11" } },
multi: true,
upsert: true
}
],
ordered: false,
writeConcern: { w: "majority", wtimeout: 5000 }
});
Update one by one:
Alternately you can run the query for each item in the list using the .update() method with upsert set to true.
mongodb playground example
operation example:
db.collection.update({
id: 3
},
{
$set: {
id: 3,
name: "a3",
newField: "newField",
}
},
{
upsert: true,
multi: true
})