Socket.IO is a javascript library that allows real-time bi-directional data flow. This means users can access the updated data without refreshing the whole page.

Some facts about Whatsapp blue tick feature and their impact on the relationship...

WhatsApp is the most popular medium of conversation in the world with almost 10 billion users. Almost 60% of the world's population uses WhatsApp for their daily conversation which makes it to the top of the list in terms of messaging applications.