Use Case

As a Node.js driver user performing toArray calls on my cursors
I want the execution time to be as quick as possible
So that I can achieve greater performance heights with the driver

User Impact

• cursor.toArray should take less time.

Dependencies

• BSON, on-demand BSON calls.

Unknowns

• Can we improve performance with this change?

Acceptance Criteria

Implementation Requirements

• Investigate the impact of adding an API that serializes an entire batch in one call to BSON.deserialize.
  • This should avoid many calls to OnDemandDocument.get() / CursorResponse.shift()
• port toArray to use this on demand API

Testing Requirements

• Ensure benchmark coverage exists in advance of this work.
  • Add a test similar to the one described in NODE-6295. Very small documents.
  • NODE-5906 added a toArray test that replicated our cursor iteration test. Double check with the team if anyone can think of a relevant case to check.

Documentation Requirements

• None.

Follow Up Requirements

• None.