How to prevent duplicates in mongodb timeseries collection

Working with Data
3

Can’t you use an update with upsert:true?

Something along the way:

// Usual inserted document that produces duplicates
insert = { "sensor":1 ,
    "timestamp":2 ,
    "mesure":"pressure" ,
    "value":10 }

// Modified into a query that would define you uniqueness
query = { "sensor" : 1 , "timestamp" : 2 , "mesure" : "pressure" }

// With the value
value = { "value":10 }

// Also replace the following insert that produces a new duplicate
// every time it is called
c.insert( insert ) ;

// into an update with upsert:true that will insert only once
// no matter how often it is called.
c.update( query , value , { upsert:true } )

I am not yet familiar with the new time series collections. I do not know if it is applicable or not. But I feel it could.