![]() To install the Coherence*Web session management module on Oracle WebLogic Server 9.2.1, 9.2.3, 10.3.1, and later, you can use the Coherence*Web Service Provider Interface (SPI)-based installation. Built on top of Oracle Coherence (Coherence), Coherence*Web:īrings Coherence data grid's data scalability, availability, reliability, and performance to in-memory session management and storage.Ĭan configure fine-grained session and session attribute scoping by way of pluggable policies (see "Session and Session Attribute Scoping").Ĭan be deployed to many mainstream application servers such as Oracle GlassFish Server, Oracle WebLogic Server, IBM WebSphere, Tomcat, and so on (see "Supported Web Containers").Ĭan be deployed to many portal containers, including Oracle WebLogic Portal (see Chapter 10, "Using Coherence*Web with WebLogic Portal").Īllows storage of session data outside of the Java EE application server, freeing application server heap space and enabling server restarts without session data loss (see "Deployment Topologies").Įnables session sharing and management across different Web applications, domains and heterogeneous application servers (see "Session and Session Attribute Scoping").Ĭan be used in advanced session models (that is, Monolithic, Traditional, and Split Session) that define how the session state is serialized or deserialized in the cluster (see "Session Models"). To align Coherence log output with Helidon logging format.Coherence*Web is an HTTP session management module dedicated to managing session state in clustered environments. We add Coherence MicroProfile Config as a dependency, which allows us to configureĬoherence using Helidon MP Configuration and changes Coherence logging defaults Is started within Helidon application via CDI extension. We add Coherence CDI Server as a dependency, which ensures that Coherence server This ensures that all necessary Helidon dependencies are imported correctly. ![]() We add Helidon MicroProfile bundle and JSON Binding support as dependencies. The parent POM is set to io.helidon.applications:helidon-mp and The pom.xml file is a good starting point for Helidon microservices Think of it as stored procedures, but using Java lambdas and rich server-side domain models. This can not only significantly impact how much data needs to be moved over the wire, but it also takes care of cluster-wide concurrency control - each entry processor has the exclusive access to the entry it is processing for the duration of its execution. Read-modify-write is probably the most common data access pattern in vast majority of applications, even though it is very inefficient way of performing data modification.Ĭoherence addresses this problem by allowing you to send the data modification code into the grid and execute it where the data is, against one or more entries. ![]() ![]() The problem with many applications that both hurts their performance and prevents them from scaling is that they simply move too much data over the network and require complicated distributed concurrency control. If there is one defining feature that makes Coherence stand out from many competing technologies, and allows you to write efficient distributed applications, this is it. ![]()
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