PPT-CAP Theorem and Consistency Models

COS 418 Distributed Systems Lecture 12 Wyatt Lloyd Outline Network Partitions Linearizability CAP Theorem Consistency Hierarchy Network Partitions Divide Systems Network Partitions Divide Systems. Then there exists a number in ab such that The idea behind the Intermediate Value Theorem is When we have two points af and bf connected by a continuous curve The curve is the function which is Continuous on the interval ab and is a numb Ali Ghodsi. alig@cs.berkeley.edu. CAP conjecture [reminder]. Can only have . two . of:. Consistency. Availability. Partition-tolerance. Examples. Databases, 2PC, centralized algo (C & A). Distributed databases, majority protocols (C & P). 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”. Sandeep. Hans. Agenda. Database Consistency Conditions. STM Consistency Conditions. A different perspective. Consistency with other STM properties.. Conclusion. Database Consistency Conditions. Recoverability. . Improving Consistency in the ESS: Target . Populations, . Frames, Reference . Periods, . Classifications and their Applications. Q2014, Vienna, 3rd June 2014. presented by Boris Lorenc. Content. Approaches to evaluating inconsistencies. 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. Presenter:. Anup. . Niroula. Before going to LSCs. Requirement Capturing and Analysis. UML diagrams. - Specify scenario of the system behavior. -Interaction between the objects. Message Sequence Chart. Indranil Gupta. Associate Professor. Dept. of Computer Science, University of Illinois at Urbana-Champaign. Joint work with . Muntasir. . Raihan. . Rahman. , Lewis Tseng, Son Nguyen, . Nitin. . Vaidya. Indranil Gupta (Indy). Department of Computer Science, UIUC. indy@illinois.edu. FuDiCo. 2015. DPRG: . http://dprg.cs.uiuc.edu. . 1. Joint Work With. Muntasir. . Rahman. (Graduating PhD Student). Luke Leslie, Lewis Tseng. Ali Ghodsi. alig@cs.berkeley.edu. CAP conjecture [reminder]. Can only have . two . of:. Consistency. Availability. Partition-tolerance. Examples. Databases, 2PC, centralized algo (C & A). Distributed databases, majority protocols (C & P). COS 518: . Advanced Computer Systems. Lecture . 3. Michael Freedman. Let’s say A and B send an op. . All readers see A . →. B ?. All . readers see . B. . → A ? . Some see . A . → B . and others . Customer Brown Bag Luncheon. November 6th, 2017 . Meet Your Code Administrators. Jeff Vernon. Building CA. 37 years in construction industry. Level III certificates in all 5 trades. MCP & CBO. Gary Mullis. Gibco boxy bottle 2008150presentGibco One Shot 50 mL bottle2016150presentGibco sera151committed to quality and innovation since 1962Gibco square plastics 19871501996Gibco round plastics 19961502007Gib Topics: synchronization wrap-up, . need for sequential consistency, fences . 2. Load-Linked and Store Conditional. LL-SC is an implementation of atomic read-modify-write. with very high flexibility.