Distributed object storage system and data read-write method

The embodiment of the invention provides a distributed object storage system and a data read-write method, and the distributed object storage system comprises a storage server cluster, a Cache clustercomposed of a plurality of Caches, and a plurality of API clients. Each API client side can access any Cache in the Cache cluster. Each API client can access any Cache in the Cache cluster, so that for the same data file, the Cache cluster only needs to cache one copy, and the storage resources of the Cache can be saved. And meanwhile, the consistency problem of accessing the same data by a plurality of clients can be solved, the same resources are used as the Cache, and the hit rate of the whole Cache cache data is higher than that of a single node. The Cache is deployed in a cluster mode, the scale of the Cache cluster can be adjusted according to needs, and good fault tolerance and expandability are achieved. 本申请实施例提供了分布式对象存储系统及数据读写方法，该分布式对象存储系统，包括：存储服务器集群，多个Cache组成的Cache集群及多个API客户端；其中，各API客户端均能够访问Cache集群中任一Ca