add remark for getty client.go:eventloop

client.go

@@ -371,6 +371,13 @@ func (c *client) connect() {
 	}
 }
 
+// there are two methods to keep connection pool. the first approch is like
+// redigo's lazy connection pool(https://github.com/gomodule/redigo/blob/master/redis/pool.go:),
+// in which you should apply testOnBorrow to check alive of the connection.
+// the second way is as follows. @RunEventLoop detects the aliveness of the connection
+// in regular time interval.
+// the active method maybe overburden the cpu slightly.
+// however, you can get a active tcp connection very quickly.
 func (c *client) RunEventLoop(newSession NewSessionCallback) {
 	c.Lock()
 	c.newSession = newSession