PPT-Client-Centric Consistency

Models Bhavana Pallepati ClientCentric Consistency Models The previously studied consistency models concern themselves with maintaining a consistent globally accessible datastore in the presence of concurrent readwrite operations. Service Level Agreements . for Cloud Storage. Douglas B. Terry, Vijayan Prabhakaran, Ramakrishna Kotla, Mahesh Balakrishnan, Marcos K. Aguilera, Hussam Abu-Libdeh. Microsoft Research. “A foolish consistency is the hobgoblin of little minds”. W. . Vogels. Communications of the ACM. Jan. 2009. Introduction. Under computing conditions involving massive scale, requiring good performance and availability, use:. Consequences to using replication. CS 15-440. Consistency and Replication – Part . II. Lecture 11, Oct . 2, 2013. Mohammad . Hammoud. Today…. Last . Session:. Synchronization: Mutual Exclusion and Election . Algorithms. Consistency and Replication: Introduction. CS 15-440. Consistency and Replication – Part IV. Lecture 13, Oct 23, 2013. Mohammad . Hammoud. Today…. Last Session:. Consistency and . Replication- Past III. Client-centric consistency models and replica management. Models. . Bhavana . Pallepati. . Client-Centric Consistency Models. The previously studied consistency models concern themselves with maintaining a consistent (globally accessible) data-store in the presence of concurrent read/write operations. Microsoft Research, Redmond. Robust Abstractions for Replicated Shared State. Modern Applications:. Distributed System. Multiple users. Code. executes on everything . (. PC,tablet,phone,service. ) . simultaneously. W. . Vogels. Communications of the ACM. Jan. 2009. Introduction. Under computing conditions involving massive scale, requiring good performance and availability, use:. Consequences to using replication. Distributed Systems. Lecture 14. Michael Freedman. 2. Linearizability. Eventual. Consistency models. Sequential. Causal. Lamport. clocks: C(a) < C(z) Conclusion: . None. Vector clocks: V(a) < V(z) Conclusion: . Presented by: Arvind Kouta. 1. Consistency Models. Strict Consistency: operations are executed in order of wall-clock time (NTP). Sequential Consistency: operations are executed in some global ordering (Total Ordering). Caching – Part III. Lecture 16, November 8, 2017. Mohammad Hammoud . Today…. Last Lecture: . One-copy semantic and cache consistency. Today’s Lecture:. Continue with cache consistency. Announcements. Distributed Systems CS 15-440 Caching – Part II Lecture 21, November 28, 2018 Mohammad Hammoud Today… Last Lecture: One-copy semantic and cache consistency Today’s Lecture: Continue with cache consistency Distributed Systems CS 15-440 Caching – Part II Lecture 22, November 20, 2019 Mohammad Hammoud Today… Last Lecture: One-copy semantic and cache consistency Today’s Lecture: Continue with cache consistency Distributed Systems. Lecture . 16. Michael Freedman. 2. Linearizability. Eventual. Consistency models. Sequential. Causal. Lamport. clocks: C(a) < C(z) Conclusion: . None. Vector clocks: V(a) < V(z) Conclusion: . AT THE DEventuallypracticeARY VO NO 1 COMMUNICATIONS OF TH ACMtant property of these systems but they were struggling with what it should be traded off against Eric Brewer systems professor at the