computing Computing is any goal-oriented activity requiring, benefiting from, or creating computing machinery. It includes the study and experimentation of algorithmic processes, and development of both hardware and software. Computing has scientific, ...

, Oracle Coherence (originally Tangosol Coherence) is a

Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's mos ...

-based

distributed cache In computing, a distributed cache is an extension of the traditional concept of cache used in a single locale. A distributed cache may span multiple servers so that it can grow in size and in transactional capacity. It is mainly used to store appl ...

and in-memory data grid. It is claimed to be "intended for systems that require high availability, high

scalability Scalability is the property of a system to handle a growing amount of work by adding resources to the system. In an economic context, a scalable business model implies that a company can increase sales given increased resources. For example, a ...

and low latency, particularly in cases when traditional relational database management systems provide insufficient throughput, or insufficient performance."

History

Tangosol Coherence was created by Cameron Purdy and Gene Gleyzer, and initially released in December, 2001. Oracle Corporation acquired Tangosol Inc., the original owner of the product, in April 2007, at which point it had more than 100 direct customers. Tangosol Coherence was also embedded in a number of other companies' software products, some of which belonged to Oracle Corporation's competitors.

Features

Coherence provides a variety of mechanisms to integrate with other services using

TopLink Oracle TopLink is a mapping and persistence framework for Java developers. TopLink is produced by Oracle and is a part of Oracle's OracleAS, WebLogic, and OC4J servers. It is an object-persistence and object-transformation framework. TopLink p ...

Java Persistence API Jakarta Persistence (JPA; formerly Java Persistence API) is a Jakarta EE application programming interface specification that describes the management of relational data in enterprise Java applications. Persistence in this context covers three ...

, Oracle Golden Gate and other platforms using APIs provided by Coherence. Coherence can be used to manage

HTTP The Hypertext Transfer Protocol (HTTP) is an application layer protocol in the Internet protocol suite model for distributed, collaborative, hypermedia information systems. HTTP is the foundation of data communication for the World Wide We ...

sessions via Coherence*Web, in which application services such as

Oracle WebLogic Server Oracle WebLogic Server is a Java EE application server currently developed by Oracle Corporation. Oracle acquired WebLogic Server when it purchased BEA Systems in 2008. Application Server versions * WebLogic Server 14c (14.1.1) - March 30, 2020 ...

IBM WebSphere IBM WebSphere refers to a brand of proprietary computer software products in the genre of enterprise software known as "application and integration middleware". These software products are used by end-users to create and integrate applications wi ...

Apache Tomcat Apache Tomcat (called "Tomcat" for short) is a free and open-source implementation of the Jakarta Servlet, Jakarta Expression Language, and WebSocket technologies. It provides a "pure Java" HTTP web server environment in which Java code can also ...

and others are claimed to get the same performance, fault tolerance, and scalability as data. In the summer of 2020, Coherence Community Edition was released as open source on

GitHub GitHub, Inc. () is an Internet hosting service for software development and version control using Git. It provides the distributed version control of Git plus access control, bug tracking, software feature requests, task management, continu ...

. Some Coherence usage patterns are also open source and are listed and supported through the Oracle Coherence incubator.The Coherence Incubator
/ref> These patterns implement features such as messaging, work distribution and

data replication Replication in computing involves sharing information so as to ensure consistency between redundant resources, such as software or hardware components, to improve reliability, fault-tolerance, or accessibility. Terminology Replication in comp ...

across

wide area network A wide area network (WAN) is a telecommunications network that extends over a large geographic area. Wide area networks are often established with leased telecommunication circuits. Businesses, as well as schools and government entities, u ...

s with Coherence.

References

External links

Oracle Coherence Product page

Open source Coherence Community Edition project

Oracle Coherence User Forum

Weblogic Coherence

The Oracle Coherence v10 incubator page

Oracle Coherence 3.5 by Aleksander Seovic, Packt Press
{{Oracle Oracle software Transaction processing Storage software Proprietary software

History

Features

See also

References

External links