| 摘要 |
The present invention relates to a real time database system configured to store a database content with a plurality of data sets, the database content being partitioned in different partitions (P1-P5). The system comprises a plurality of master databases (10-50), each master database containing a partition of the database content, each partition being provided on a different physical storage unit and at least one replica database (110-510), each replica database containing subpartitions (11-54) of the partitions stored in master databases (10-50). Furthermore, the system comprises at least one distributor (1-5) configured to route a request for a data set to the master database (10-50), where the data set to which the request refers to, is provided, and distributor (1-5) configured to divide each partition (P1-P5) into several subpartitions. Additionally, the system comprises at least one replicator (100-500), configured to generate a replica (11-54) of each subpartition, and configured to store each replica (11 -54) on a replica database (110-510), wherein the at least one replicator (100-500) stores the replicas (11 -54) of each subpartition in such a way that the replicas of one partition are contained on different physical storage units, on a physical storage unit other than the corresponding partition (P1-P5), and on a physical storage unit other than the replicator (100-500) generating the replica (11-54) of said one partition, wherein the distributor is configured to route a replication request for a subpartition to the replicator responsible for said subpartition. |
