NDLI: NVMcached: An NVM-based Key-Value Cache

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NVMcached: An NVM-based Key-Value Cache

Content Provider	ACM Digital Library
Author	Zhang, Li Ren, Yufei Wang, Yandong Wu, Xingbo Hack, Michel Shao, Zili Ni, Fan Jiang, Song
Abstract	As byte-addressable, high-density, and non-volatile memory (NVM) is around the corner to be equipped alongside the DRAM memory, issues on enabling the important key-value cache services, such as memcached, on the new storage medium must be addressed. While NVM allows data in a KV cache to survive power outage and system crash, in practice their integrity and accessibility depend on data consistency enforced during writes to NVM. Though techniques for enforcing the consistency, such as journaling, COW, or checkpointing, are available, they are often too expensive by frequently using CPU cache flushes to ensure crash consistency, leading to (much) reduced performance and excessively compromised NVM's lifetime. In this paper we design and evaluate NVMcached, a KV cache for non-volatile byte-addressable memory that can significantly reduce use of flushes and minimize data loss by leveraging consistency-friendly data structures and batched space allocation and reclamation. Experiments show that NVMcached can improve its system throughput by up to 2.8x for write-intensive real-world workloads, compared to a non-volatile memcached.
Starting Page	1
Ending Page	7
Page Count	7
File Format	PDF
ISBN	9781450342650
DOI	10.1145/2967360.2967374
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2016-08-04
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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