Intel Corporation

Hangzhou Alicloud Feitian Information Technology Co., Ltd.

Kai Zheng

Tao Wang

Wei Zhou

Yi Chen

Vinod Sharma

Malini Krishnan Bhandaru

Jiajia Li

Kunhui Su

Varsha Parthasarathy

Uma Maheswara Rao Gangumalla

Nofil Fawad

Niraj Rai

Shunyang Yao

Qiyuan Gong

Dapeng Sun

Rakesh Radhakrishnan Potty

Xinxin Shu

A data caching and reading method, and a data access system are provided. A client sends a first request to a data storage system so as to obtain metadata of target data. The client sends a second request to a data caching system, the second request comprising the metadata. The data caching system determines, on the basis of the metadata, whether cache target data consistent with the target data stored in the data storage system is cached. When it is determined cache target data is cached, the client obtains the target data from the data caching system. When no consistent cache target data is cached, the client obtains the target data from the data storage system, and sends the obtained target data to the data caching system, so as to cache the target data.

Data caching and reading method, and data access system

Examples include techniques for backing up a file to long term 'cold' storage by using circuitry, and logic for execution by the circuitry, to receive a request to back up the file in a distributed file system to cold storage, to copy the file from at least one data node of the distributed file system to cold storage, to set a location of the file in cold storage in a name node of the distributed file system, and to set a length of the file to zero in the name node.

Method of efficient backup of distributed file system files with transparent data access

Growing community of inventors

Shanghai, China

Kai Zheng