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  1. Node.js Driver
  2. NODE-6356

Improve BSON serialization performance

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    • Type: Icon: Improvement Improvement
    • Resolution: Fixed
    • Priority: Icon: Unknown Unknown
    • bson-6.9.0
    • Affects Version/s: None
    • Component/s: BSON
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      3. Which versions of the driver/connector does this apply to?

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      1. What would you like to communicate to the user about this feature? 2. Would you like the user to see examples of the syntax and/or executable code and its output? 3. Which versions of the driver/connector does this apply to?

      During extensive benchmarking of BSON serialization/deserialization performance to test  NODE-6246 I found that most document properties cause multiple calls to `Object.prototype.toString.call(prop)` which are quite expensive. By refactoring the serialization checks to move these calls out of hot paths could result in ~20% serialization performance (testing with MFlix dataset). By also integrating a WeakMap cache to essentially memoize calls to `Object.prototype.toString.call(prop)` can increase performance of serialization and calculateSize to 20-40%.

      https://github.com/mongodb/js-bson/pull/709

            Assignee:
            durran.jordan@mongodb.com Durran Jordan
            Reporter:
            reece.sean@gmail.com Sean Reece
            Durran Jordan
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              Created:
              Updated:
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