Hello, I need to insert a document by generating the unique server-side “_id” id. I have two questions: (1) Assuming that there are potentially 100 processes that can insert a new document at the same time, can the probability of collision between the various processes be negligible? (2) Assuming…

Hi @Matteo_Tarantino , _id are generated client-side by the drivers when they send the documents to the cluster if one doesn’t already exists. It’s buried in the insertOne and insertMany source code somewhere - depends of which driver you are using of course. ObjectIds are built in a very specific …

Matteo_Tarantino (Matteo Tarantino) March 8, 2022, 9:30pm 3

Very clear explanation. Thank you!

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Collision Probability of generating _id server-side