It is a group of geographically distributed proxy servers and networks often useful for DDoS mitigation. A CDN performs as only one unit to deliver articles promptly by using a number of spine and WAN connections, So distributing community load.Tin t?c th?c hi?n cu?c t?n công b?ng cách g?i mã ??c ??n h? th?ng b?ng vi?c s? d?ng dãy IP n?m quy?n