Journal ArticleDOI
Cassandra: a decentralized structured storage system
Avinash Lakshman,Prashant Malik +1 more
TLDR
Cassandra is a distributed storage system for managing very large amounts of structured data spread out across many commodity servers, while providing highly available service with no single point of failure.Abstract:
Cassandra is a distributed storage system for managing very large amounts of structured data spread out across many commodity servers, while providing highly available service with no single point of failure. Cassandra aims to run on top of an infrastructure of hundreds of nodes (possibly spread across different data centers). At this scale, small and large components fail continuously. The way Cassandra manages the persistent state in the face of these failures drives the reliability and scalability of the software systems relying on this service. While in many ways Cassandra resembles a database and shares many design and implementation strategies therewith, Cassandra does not support a full relational data model; instead, it provides clients with a simple data model that supports dynamic control over data layout and format. Cassandra system was designed to run on cheap commodity hardware and handle high write throughput while not sacrificing read efficiency.read more
Citations
More filters
Journal ArticleDOI
A Two-layer Geo-cloud based Dynamic Replica Creation Strategy
Zhen Ye,Shanping Li,Junzan Zhou +2 more
TL;DR: The proposed TGstag aims to minimize both cross-datacenter bandwidth consumption and average access time with constraints of policy and commodity node capacity and significantly reduces cross- Datacentre bandwidth and read access time.
Proceedings ArticleDOI
Scalable data management: NoSQL data stores in research and practice
Felix Gessert,Norbert Ritter +1 more
TL;DR: This tutorial gives an in-depth survey of the most relevant NoSQL databases to provide comparative classification and highlight open challenges, and presents how each system's design is governed by a central set of trade-offs over irreconcilable system properties.
Proceedings ArticleDOI
CloudRaid: hunting concurrency bugs in the cloud via log-mining
TL;DR: The proposed CloudRaid automatically detects concurrency bugs in cloud systems, by analyzing and testing those message orderings that are likely to expose errors, and tries to flip the order of a pair of messages if they may happen in parallel.
Proceedings ArticleDOI
Hermes: a Fast, Fault-Tolerant and Linearizable Replication Protocol
Antonios Katsarakis,Vasilis Gavrielatos,M. Katebzadeh,Arpit Joshi,Aleksandar Dragojevic,Boris Grot,Vijay Nagarajan +6 more
TL;DR: This work introduces Hermes, a broadcast-based reliable replication protocol for in-memory datastores that provides both high throughput and low latency by enabling local reads and fully-concurrent fast writes at all replicas.
Posted Content
Analysis of Research in Healthcare Data Analytics
TL;DR: The systematic review has showed an interesting demographic of fields of publication, research approaches, as well as outlined some of the possible reasons and issues associated with healthcare data analytics, based on geographical distribution theme.
References
More filters
Journal ArticleDOI
MapReduce: simplified data processing on large clusters
Jeffrey Dean,Sanjay Ghemawat +1 more
TL;DR: This paper presents the implementation of MapReduce, a programming model and an associated implementation for processing and generating large data sets that runs on a large cluster of commodity machines and is highly scalable.
Journal ArticleDOI
MapReduce: simplified data processing on large clusters
Jeffrey Dean,Sanjay Ghemawat +1 more
TL;DR: This presentation explains how the underlying runtime system automatically parallelizes the computation across large-scale clusters of machines, handles machine failures, and schedules inter-machine communication to make efficient use of the network and disks.
Proceedings ArticleDOI
Chord: A scalable peer-to-peer lookup service for internet applications
TL;DR: Results from theoretical analysis, simulations, and experiments show that Chord is scalable, with communication cost and the state maintained by each node scaling logarithmically with the number of Chord nodes.
Journal ArticleDOI
The Google file system
TL;DR: This paper presents file system interface extensions designed to support distributed applications, discusses many aspects of the design, and reports measurements from both micro-benchmarks and real world use.
Proceedings Article
Bigtable: A Distributed Storage System for Structured Data (Awarded Best Paper!).
Fay W. Chang,Jeffrey Dean,Sanjay Ghemawat,Wilson C. Hsieh,Deborah A. Wallach,Michael Burrows,Tushar Deepak Chandra,Andrew Fikes,Robert Gruber +8 more
TL;DR: Bigtable as mentioned in this paper is a distributed storage system for managing structured data that is designed to scale to a very large size: petabytes of data across thousands of commodity servers, including web indexing, Google Earth and Google Finance.