Something similar was introduced for the MongoDB Server with SERVER-64964, however this change was limited to only the server's components. Drivers could also introduce a similar feature to capture and display information when connection establishment exceeds a set threshold.

For example, the server introduced slowConnectionThresholdMillis which defaults to 100ms, and when exceeded will output a log entry that contains details about:

• DNS Resolution Time
• TCP Connection Time
• TLS Handshake Time
• Authentication Time