Optimising Mongo DB insert time

Working with Data
1

Hi Team,

We have a requirement in our application where we need to insert 2500 rows to MongoDB .

// Sample code to show how we are inserting

For(int i = 0 i< BATCH_SIZE ; i++) {
mongoRepo.saveAll( Collection<> )
}

Here BATCH_SIZE is configurable. In our case it is 100.

When the code is running it is taking more than 15 min and it is partially saving the data (i.e ~ 1600 records out of 2500 ).

After saving 1600 records it is throwing transactionLifeTimeExceededSeconds (error code : 290 ) currently this param is configured for 60 seconds.

Q1) :
Do we need to change the batch size ?

Q2) :
Can we parallelize it ? ( multithreading?)