Abstract: Methods and devices for storing and querying feed data. A method includes generating, by a computing device, multiple shards from feed data of an individual user. An individual shard may include first data, second data and third data. The computing device may thereby form a linked list structure of the multiple shards, and store the individual shard in a storage system. When the user sends a query for feed data, the computing device may obtain a unique identifier from the query, and search the storage system using the unique identifier. The computing device may then determine the current shard based on the unique identifier in the storage system and an additional shard corresponding to the third data of the current shard. The computing device may return the first data and second data of the additional shard to the user.