การดู
9:44
How Signal Instant Messaging Protocol Works (& WhatsApp etc) - Computerphile
25:15
WHATSAPP System Design: Chat Messaging Systems for Interviews
9:54
5 BEST Messengers For Privacy & Security!
2:36
Most Popular Instant Messenger Apps/ Websites/ Software’s 1999 – 2019
0:45
HOA Messenger - All-In-One HOA Management Software
10:50
How to Use Facebook Messenger - Beginner's Tutorial
2:07
Discover the Nigerian Owned Messaging App (SOFT TALK)
14:50
System Design Mock Interview: Design Facebook Messenger
