WS DATA

Contact Photo/Avatar: A visual identifier that appears during calls, messages, and in the contact list.
Ringtones and Vibration Patterns:

Categories for organizing contacts (e.g., "Family," "Work," "Friends," "Clients"). This aids in bulk messaging or filtering.
Emergency Contacts:

Specific ...

WhatsApp's database strategy is constantly evolving to meet the demands of its massive user base, new features, and regulatory requirements:

Scalability Continues: As user numbers grow, the database infrastructure must continually scale, requiring ongoing optimization of sharding, replication, and ...