improved the timer precision, the minimal resolution is now 1ms inste…

…ad of 1s

internal/timer/timer.go

@@ -5,22 +5,26 @@ import (
 	"time"
 )
 
+// Time contains the unix-time in milliseconds updated every [Resolution] milliseconds
 var Time = new(atomic.Int64)
 
 func Now() time.Time {
-	return time.Unix(Time.Load(), 0)
+	millis := Time.Load()
+	return time.Unix(millis/1000, (millis%1000)*1e6)
 }
 
-// Resolution depicts how often is the time updated. By default, it's updated once
-// every 500ms which is considered precise enough
+// Resolution is the frequency at which time is updated. Default 500ms are
+// precise enough for setting I/O deadlines
 const Resolution = 500 * time.Millisecond
 
 func init() {
-	Time.Store(time.Now().Unix())
+	// there is no guarantee that the goroutine will be started immediately. If it won't,
+	// some rapid usage of the timer will result in zero-time, which isn't great actually
+	Time.Store(time.Now().UnixMilli())
 
 	go func() {
 		for {
-			Time.Store(time.Now().Unix())
+			Time.Store(time.Now().UnixMilli())
 			time.Sleep(Resolution)
 		}
 	}()