Media and File Storage: Telegram allows users to send

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It also includes user settings and preferences, such as privacy configurations, notifications, and theme choices. Message History Database: For cloud chats (as opposed to secret chats), messages are stored in Telegram’s cloud. Each message is assigned a unique identifier and timestamp, and is associated with a conversation thread or chat ID. Messages are indexed and stored in a way that enables quick retrieval for syncing across devices. Deleted messages are marked but may be retained temporarily for synchronization or server-side rollback functions. Group and Channel Metadata: Telegram supports groups with up to 200,000 members and channels with unlimited subscribers.

The database maintains a complex ledger of group memberships, administrator roles, permissions, pinned messages, and banned users. For channels, the database stores subscriber counts, post reach, reactions, and forwarded message statistics. files up to 2 GB in size. Media files—including images, voice messages, videos, stickers, and documents—are stored in a australia telegram data separate, but linked, file storage system that references metadata stored in the database. Each file is associated with a media ID and linked to the chat or channel in which it was shared. Bots and Inline Services: Telegram’s bot platform adds another layer to its database complexity. Bots interact via APIs and can store temporary state data, custom keyboard layouts, and inline callback data. Telegram stores these interactions and keeps track of which bots are authorized by which users or groups. Session and Login Records: To support multi-device access, Telegram stores login sessions, including IP addresses, device names, and access tokens.

These are used to manage active sessions, push notifications, and location-based restrictions. Contact and Social Graph: Telegram encourages users to sync their contacts to identify friends on the platform. This results in a large social graph stored in the backend, allowing Telegram to offer suggestions, group recommendations, and friend discovery features. Secret Chats and Local Storage It is important to note that not all Telegram messages are stored on Telegram's servers. Telegram offers “secret chats”, which are end-to-end encrypted and stored only on the devices involved in the conversation. These messages do not touch Telegram’s cloud infrastructure after delivery.