Abstract: In various embodiments, methods and systems for implementing distributed data object management are provided. The distributed data object management system includes a local metadata-consensus information store and one or more remote metadata-consensus information stores for metadata-consensus information and a local data store and one or more remote data stores for erasure coded fragments. For a write operation, corresponding metadata writes and data writes are performed in parallel using a metadata write path and a data write path, respectively, when writing to the local metadata-consensus information store and the one or more remote metadata-consensus information stores and the local data store and the one or more remote data stores. And, for a read operation, corresponding metadata reads and data reads are performed in parallel using a metadata read path and a data read path, respectively, when reading from the metadata-consensus information stores and the data stores.

Abstract: In various embodiments, methods and systems for implementing distributed data object management are provided. The distributed data object management system includes a distributed storage system having a local metadata-consensus information store in and one or more remote metadata-consensus information stores. A metadata-consensus information store is configured to store metadata-consensus information. The metadata-consensus information corresponds to erasure coded fragments of a data object and instruct on how to manage the erasure coded fragments. The distributed storage system further includes a local data store and one or more remote data stores for the erasure coded fragments. The distributed data object management system includes a distributed data object manager for operations including, interface operations, configuration operations, write operations, read operations, delete operations, garbage collection operations and failure recovery operations.

Abstract: A cache includes a cache array and a cache controller. The cache array has a multiple number of entries. The cache controller is coupled to the cache array, for storing new entries in the cache array in response to accesses by a data processor, and evicts entries from the cache array according to a cache replacement policy. The cache controller includes a frequent writes predictor for storing frequency information indicating a write back frequency for the multiple number of entries. The cache controller selects a candidate entry for eviction based on both recency information and the frequency information.

Abstract: A cache includes a cache array and a cache controller. The cache array has a multiple number of entries. The cache controller is coupled to the cache array, for storing new entries in the cache array in response to accesses by a data processor, and evicts entries from the cache array according to a cache replacement policy. The cache controller includes a frequent writes predictor for storing frequency information indicating a write back frequency for the multiple number of entries. The cache controller selects a candidate entry for eviction based on both recency information and the frequency information.