WhatsApp is one of the most popular messaging apps available on iOS, Android, and Windows phones. It allows users to send messages, photos, videos, and other files to their contacts. The app has become a huge success due to its ease of use and ability to connect people from all over the world in a matter of seconds.
So what database does WhatsApp use? WhatsApp uses the open-source database system SQLite.
This system is lightweight and compact, making it ideal for mobile applications that need to store large amounts of data with minimal overhead. SQLite is also highly secure and reliable, which is important for an app that handles sensitive messages and files.
WhatsApp stores all user data in a single database file stored on each user’s device. This file contains information such as contacts, conversations, messages, photos, videos, and other files shared between users.
In order to ensure that the data remains secure and private, WhatsApp encrypts this file using the industry-standard AES-256 encryption algorithm. This means that if someone were able to access a user’s device without their knowledge or permission (such as through physical theft or hacking), they would not be able to access any of the data stored on it without decrypting the file first.
WhatsApp also makes use of various cloud storage services in order to back up user data in case their device is lost or stolen. These services are heavily encrypted using the same security measures applied to the local database file described above. This ensures that even if someone were able to access these backups they would still not be able to access any of the user’s personal information or conversations without first decrypting them.
In addition to SQLite, WhatsApp also uses several other technologies in order to provide its users with an optimal experience. These include Google Cloud Messaging (GCM) for push notifications when new messages arrive; Apple Push Notification Service (APNS) for notifications sent over iOS devices; XMPP (Extensible Messaging and Presence Protocol) for real-time communication between devices; WebRTC (Real Time Communications) for video calls; and WebSocket protocol for persistent two-way communication between devices.
Conclusion:
WhatsApp uses the open-source SQLite database system in order to store large amounts of data securely on users’ devices while providing maximum performance with minimal overhead. It also utilizes various cloud storage services as well as other technologies such as GCM and APNS in order to provide an optimal experience for its users.