دانلود مقاله ترجمه شده به طرف پایگاه داده چندگانه انعطاف پذیر و مستقل
عنوان فایل ترجمه فارسی: به سوی پایگاه داده چندگانه (اشتراکی) انعطاف پذیر و مستقل.
عنوان نسخه انگلیسی: Towards an Elastic and Autonomic Multitenant Database
مرتبط با رشته های : فناوری اطلاعات و کامپیوتر
تعداد صفحات مقاله فارسی: ۱۶ صفحه
کلیدواژه: محاسبه ابری، چندگانگی، مدیریت داده انعطاف پذیر، انتقال پایگاه داده، معماری غیر اشتراکی
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قسمتی از متن انگلیسی:
Synchronous migration is an eventual, non-blocking4 migration where a source and destination operate as a tightly coupled cluster. This requires the destination to act as an eager replica of the source, where updates must synchronously occur at the source and destination. If the destination host does not have an up to date replica of the cell, the source and destination hosts are configured to run as a synchronized cluster, and the destination gradually acquires a synchronized state by replaying writes that were performed on the source DBMS. Once a stable state is reached, the coordinating process notifies the source host to stop serving the cell, and all future connections are sent to the destination host. Many popular RBDMSs have the ability to run in a master-slave mode in order to efficiently replicate data across hosts in a cluster. Synchronous migration can be achieved using a method proposed by Yang et al. [23] which uses two-phase commit and a read one/write all master-slave mode. Even though many DBMSs support a clustered mode off the shelf, changing a lazy replication to a synchronized, or eager replication, often requires short periods of downtime to change server states. Synchronous migration is eventual due to the synchronization period required to complete migration. A minimal amount of downtime and interruption of service may occur while switching the primary master to the destination. The minimal operational overhead originates from the hosts needing to run in a mode which is ready for clustering. The coordinator is responsible for redirecting client connections to the destination host for cells
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