Distributed and high performance big-file cloud storage based on key-value store

This research proposes a new Big File Cloud (BFC) with its architecture and algorithms to solve difficult problems of cloud-based storage using the advantages of key-value stores. There are many problems when designing an efficient storage engine for cloud-based storage systems with strict requirements such as big-file processing, lightweight meta-data, low latency, parallel I/O, deduplication, distributed, high scalability. Keyvalue stores have many advantages and outperform traditional relational database in storing data for heavy load systems. This paper contributes a low-complicated, fixed-size meta-data design, which supports fast and highly-concurrent, distributed file I/O, several algorithms for resumable upload, download and simple data deduplication method for static data. This research applies the advantages of ZDB - an in-house key-value store which was optimized with auto-increment integer keys for solving big-file storage problems efficiently. The results can be used for building scalable distributed data cloud storage that support big-files with sizes up to several terabytes.