monotime

func Now ¶

func Now() Time

Now returns the current time as Unix nanoseconds (int64). It uses monotonic time measurement from the base time to ensure the returned value increases monotonically and is not affected by system clock adjustments.

Performance optimization: By capturing the base wall time once at startup and using time.Since() for elapsed calculation, this avoids repeated time.Now() calls and leverages Go's internal monotonic clock for efficient duration measurement.