Oracle Coherence is a distributed in-memory data grid solution that provides a single consistent view of data across multiple nodes. It ensures high availability and scalability. Coherence distributes data and backups across nodes so that the failure of a single node does not result in data loss. It uses a peer-to-peer protocol for fast consensus and scalable communication between nodes. Coherence provides features like caching, transactions, events, and querying for building scalable applications.

1. Oracle Coherenceלירן זילכהמנכ"ל משותףLiran.zelkha@alunasoft.com

2. AlunaIsrael’s leading Java/JavaEE and SOA consulting companyCustomers:

3. What is Oracle Coherence?Distributed Memory Data Management Solution(aka: Data Grid)

4. How Can a Data Grid Help?Provides a reliable data tier with a single, consistent view of dataEnables dynamic data capacity including fault tolerance and load balancingEnsures that data capacity scales with processing capacity

5. DataGrid ViewWebServicesEnterprise ApplicationsReal TimeClientsApplication TierData ServicesCoherence™Data GridData SourcesDatabasesWeb ServicesMainframes

6. Oracle Grid Computing: Enterprise ReadyEnterprise Application GridExtreme Transaction Processing XTPCommon Shared Application Infrastructure (Application Virtualization)

7. Data Virtualization (Data as a Service)

8. Middle tier scale out for Grid Based OLTP

9. Massive Persistent scale out with Oracle RACApplication TierOracle CoherenceOracle RAC

10. Requirements of Enterprise Data GridReliableUniversalScalableDataDynamically Expandable

11. No data loss at any volume

12. No interruption of service

13. Leverage Commodity Hardware

14. Cost Effective

15. Single view of data

16. Single management view

17. Simple programming model

18. Any Application

19. Any Data Source

20. Built for continuous operation

21. Data Fault Tolerance

22. Self-Diagnosis and Healing

23. “Once and Only Once” Processing

24. Data Caching

25. Analytics

26. Transaction Processing

27. Event ProcessingHow Does Coherence Work?Cluster of nodes holding % of primary data locallyBack-up of primary data is distributed across all other nodesLogical view of all data from any node

28. How Does Coherence Work?All nodes verify health of each other

29. In the event a node is unhealthy, other nodes diagnose stateHow Does Coherence Work?Unhealthy node isolated from cluster

30. Remaining nodes redistribute primary and back-up responsibilities to healthy nodesX

31. Customer ScenariosCachingApplications request data from the Data Grid rather than backend data sourcesAnalyticsApplications ask the Data Grid questions from simple queries to advanced scenario modelingTransactionsData Grid acts as a transactional System of Record, hosting data and business logicEventsAutomated processing based on event

32. Demo

33. Topology #1 - Replicated Cache

34. Topology #1 - Replicated Cache

35. Topology #2 - Partitioned Cache

36. Topology #2 - Guaranteed Cluster Resiliency

37. Topology #2 - Partitioned Failover