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Erschienen in:
2018 | OriginalPaper | Buchkapitel
Teleporting Failed Writes with Cache Augmented Data Stores
verfasst von : Shahram Ghandeharizadeh, Haoyu Huang, Hieu Nguyen
Erschienen in: Cloud Computing – CLOUD 2018
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Abstract
Cache Augmented Data Stores enhance the performance of workloads that exhibit a high read to write ratio by extending a persistent data store (PStore) with a cache. When the PStore is unavailable, today’s systems result in failed writes. With the cache available, we propose TARDIS, a family of techniques that teleport failed writes by buffering them in the cache and persisting them once the PStore becomes available. TARDIS preserves consistency of the application reads and writes by processing them in the context of buffered writes. TARDIS family of techniques is differentiated in how they apply buffered writes to PStore once it recovers. Each technique requires a different amount of mapping information for the writes performed while PStore was unavailable. The primary contribution of this study is an overview of TARDIS and its family of techniques.