New and Improved for 14c (14.1.2.0.0)

• Java Modules Support
  • You can now run Coherence using Java modules. See Using Java Modules to Build a Coherence Application in Developing Applications with Oracle Coherence.
  • Coherence no longer requires the following modules to be explicitly opened or exported: java.base/java.lang.invoke=com.oracle.coherence, java.base/java.lang=org.eclipse.persistence.core, java.management/sun.management=com.oracle.coherence, java.base/java.util=com.oracle.coherence. See Using Java Modules to Build a Coherence Application in Developing Applications with Oracle Coherence.
• Core Improvements
  • NamedMap API - A distributed implementation of java.util.Map interface. See Performing Basic Cache Operations in Developing Applications with Oracle Coherence.
  • Bootstrap API - The new bootstrap API enables you to configure and start a Coherence application by building a com.tangosol.net.Coherence instance and starting this instance. See Using the Bootstrap API in Developing Applications with Oracle Coherence.
  • Repository API - The Coherence Repository API provides you with a higher-level, DDD-friendly way to access data managed in Coherence. See Using the Repository API in Developing Applications with Oracle Coherence.
  • Caffeine - Coherence now adds a Caffeine backing map implementation, enabling you to use Caffeine wherever the standard Coherence local cache can be used. See Integrating Caffeine in Developing Applications with Oracle Coherence.
  • Partition Events Logging - This feature enables logging of partition unavailable duration when the partition events occur. For example, during partition movements between members. See Logging Partition Events in Developing Applications with Oracle Coherence.
  • Non-Blocking Data Sources - The new NonBlockingEntryStore enables cache stores to respond asynchronously when mutations are made to entries. See Non-Blocking Data Sources in Developing Applications with Oracle Coherence.
  • Coherence Lifecycle Listeners - Added the ability to register lifecycle listeners with Coherence instances, either through the Coherence API, or through discovery using the Java ServiceLoader. See Starting Cache Servers in Developing Applications with Oracle Coherence.
  • Remote Client MEMBER_JOINED and MEMBER_LEFT MemberEvents - A proxy now sends MEMBER_JOINED and MEMBER_LEFT MemberEvents to all active services on the proxy when a remote client joins and leaves. This event enables management of a service’s server side resources being retained per remote client. If a MemberListener is registered on a service and the environment has both remote and cluster member access to a service, the MemberListener may need to account for remote client MemberEvent(s). For example, see Example 8-3 in Listening to Member Events section in Developing Applications with Oracle Coherence.
  • Scheduled Backups - Writing asynchronous backups has been enhanced to enable scheduling of these backups at a time interval after the primary has been written. See Scheduling Backups in Developing Applications with Oracle Coherence.
  • Read Locator - Coherence now allows for certain requests for data to be targeted to non-primary partition owners (backups) to balance request load or reduce latency. See Using the Read Locator in Developing Applications with Oracle Coherence.
  • Cache Configuration Override - Similar to the Coherence Cluster override, you can now specify a cache configuration override to override elements of existing cache configuration with new elements at runtime. See Using Cache Configuration Override in Developing Applications with Oracle Coherence.
  • Extend the Operational Configuration File - Adds support for custom namespace handlers in the Coherence operational configuration file. See Introduction to Extending Configuration Files in Developing Applications with Oracle Coherence.
  • BigDecimal-related aggregators - These aggregators now support the ability to set BigDecimal properties such as scale, rounding mode, stripTrailingZeros, and MathContext (where applicable) for the final result. See Java API Reference for Oracle Coherence.
  • JSON objects in CohQL - The Coherence Query Language (CohQL) now supports the ability to insert JSON objects as keys or values, as well as to query by and select JSON attributes. See Working with JSON Objects in Developing Applications with Oracle Coherence.
  • Durable Events (Experimental) - Coherence now supports an experimental feature which allows missed MapEvents to be replayed when a client disconnects. See Using Durable Events (Experimental) in Developing Applications with Oracle Coherence.
• Topics Improvements
  • A number of durability and stability improvements have been applied to make topics more stable during failover.
  • Topics now guarantee at least once delivery, whereas in previous releases this was not the case. A subscriber that is part of a group can commit a processed message to indicate that processing is complete and it should not be redelivered on failover.
  • Topic channels are now fairly allocated to the subscribers in a subscriber group; only a single subscriber receives messages from an allocated channel.
  • Subscribers will be timed-out after a configurable period of inactivity (or failure to heartbeat) causing their channels to be reallocated to remaining subscribers in the same group.
  • Added API methods to determine the number of unreceived elements for a NamedTopic subscriber or subscriber group.
  See Using Topics in Developing Applications with Oracle Coherence.
• Persistence
  • Persistent Backups - You can now enable and configure persistent backups which stores backup partitions on a disk, as additional copies of persisted primary one. See Using Persistent Backups in Developing Applications with Oracle Coherence.
  • Parallel Recovery - The parallel recovery feature enables Coherence to recover data in parallel within a member/process as well as in parallel across the cluster. See Parallel Recovery in Administering Oracle Coherence.
• Distributed Concurrency - The Coherence Concurrent module provides distributed implementations of the concurrency primitives from the java.util.concurrent package such as executors, atomics, locks, semaphores, and latches. See Implementing Concurreny in a Distributed Network in Developing Applications with Oracle Coherence.
• Queues - Coherence now includes an implementation of Queues as a data structure. See Using Blocking Queues in Developing Applications with Oracle Coherence.
• Serialization/ POF
  • Portable Types and POF Maven Plug-in - This release introduces Portable Types, which provide a way to add support for POF serialization to your classes by using annotations and without the requirement to implement serialization code by hand. See Using Portable Object Format in Developing Applications with Oracle Coherence.
  • POF Configuration Discovery - It is now possible to make POF configuration files discoverable at runtime by the ConfigurablePofContext class instead of needing to put them inside <include> elements. See Making POF Configuration Files Discoverable at Runtime in Developing Applications with Oracle Coherence.
• Integrations
  • Internal
    • CDI Support - Coherence provides support for Contexts and Dependency Injection (CDI) within the Coherence cluster members to inject Coherence-managed resources, such as NamedMap, NamedCache, and Session instances into CDI managed beans. See Using Contexts and Dependency Injection in Developing Applications with Oracle Coherence.
    • MicroProfile Configuration - Coherence MicroProfile (MP) Configuration provides support for Eclipse MicroProfile Configuration within Coherence cluster members. See Using Coherence MicroProfile Configuration in Integrating Oracle Coherence.
    • MicroProfile Metrics - Coherence MicroProfile Metrics provides support for Eclipse MicroProfile Metrics within the Coherence cluster members. See Using Coherence MicroProfile Metrics in Integrating Oracle Coherence.
  • External
    • Helidon - Coherence can be integrated with Helidon through Contexts and Dependency Injection (CDI). See Helidon.
    • GraphQL Support through Helidon - Using Helidon integration, you can enable access to Coherence data from GraphQL. See GraphQL.
    • Kafka - Coherence can now integrate with Kafka using Kafka Entry Store and Kafka Sink Connector. See Kafka.
    • Micronaut - Coherence now provides integration to Micronaut. See Micronaut Coherence.
    • Hibernate - Updated support for Coherence integration with Hibernate. See Integrating Hibernate and Coherence in Integrating Oracle Coherence.
    • Spring - Coherence can be integrated with Spring, which is a platform for building and running Java-based enterprise applications. See Integrating Spring with Coherence in Integrating Oracle Coherence.
• gRPC - Coherence introduces the ability to use gRPC to access Coherence caches. See Introduction to gRPC.
  • gRPC Proxy - A new Coherence gRPC proxy implementation of the services defined within the Coherence gRPC module. See Using the Coherence gRPC Server in Developing Remote Clients for Oracle Coherence.
  • gRPC Java Client - The Coherence Java gRPC Client is a library that enables a Java application to connect to a Coherence gRPC proxy server. See Using the Coherence Java gRPC Client in Developing Remote Clients for Oracle Coherence.
• Coherence*Web - Apache Tomcat 9 Support - Coherence*Web is now supported on Tomcat 9.
• Clients
  • JavaScript Client - The Coherence JavaScript Client allows Node applications to act as cache clients to a Coherence Cluster using gRPC framework as the network transport. See Coherence JavaScript Client.
  • Go Client - The Coherence Go Client allows native Go applications to act as cache clients to a Coherence cluster using gRPC for the network transport. See Coherence Go Client.
  • Python Client - The Coherence Python Client allows Python applications to act as cache clients to an Oracle Coherence cluster using gRPC as the network transport. See Coherence Python Client.
  • Client for .NET - Coherence for .NET 14.1.2 supports .NET 6 and .NET 8. Coherence for .NET 14.1.2 includes session support for ASP.NET 6 and 8. Prior versions of Coherence for .NET used an app.config file. Coherence for .NET 14.1.2 now uses appsettings.json, which follows standard .NET practices. Coherence 14.1.2 server ASP.NET session support is not compatible with older Coherence for .NET versions. For more information, see Oracle Coherence for .NET.
• Security
  • SSL Improvements - Various SSL improvements that enable more flexible configuration and allow customizations through extensions. See Using Private Key and Certificate Files and Using Custom Keystore, Private Key, and Certificate Loaders in Securing Oracle Coherence.
  • New TLS/SSL socket provider configuration element - client-auth element controls whether the socket provider should use one-way or two-way TLS/SSL authentication. See Configuring TLS/SSL Authentication in Securing Oracle Coherence.
  • New Password Provider for DefaultController Keystore - This password provider allows you to obtain the passwords from the DefaultController keystore. See Using Custom Password Providers in Securing Oracle Coherence.
• Management/Administration
  • OpenTelemetry API - The OpenTelemetry API provides developers with visibility into cache operations within the cluster. See Distributed Tracing in Developing Applications with Oracle Coherence.
  • Coherence Metrics - Additional dependencies are no longer required when using the coherence-metrics module. In addition, a new Coherence Metrics endpoint for WebLogic managed Coherence servers allows the scraping of metrics using metrics gathering systems such as Prometheus. See Using Oracle Coherence Metrics in Managing Oracle Coherence.
  • A new system property, coherence.metrics.http.path, that specifies the metrics context root path. See Using Metrics System Properties in Managing Oracle Coherence.
  • Coherence Management over REST - The dependencies required to enable Management over REST have been reduced significantly. The only additional dependency required to enable management over REST is coherence-json.jar. See REST API for Managing Oracle Coherence.
  • Health Check API - A new health check API to enable application code to determine the health of the local Coherence member. See Using the Health Check API in Managing Oracle Coherence.
  • Micrometer Metrics - The coherence-micrometer module provides integration between Coherence metrics and Micrometer allowing Coherence metrics to be published through any of the Micrometer registries. See Using Coherence Micrometer Metrics in Managing Oracle Coherence.
  • Access to Remote MBeans - The new jmxserviceurl script works with the JConsole utility to remotely access MBeans. See Accessing MBeans of a Running Coherence Cluster Using the JConsole Utility in Managing Oracle Coherence.
  • New Reports - Executor, View, Storage, and Proxy Connections - See Understanding the Executor Report, Understanding the View Report, Understanding the Cache Storage Report, and Understanding the Proxy Connections Report in Managing Oracle Coherence.
  • New Topics Reports - See Understanding the Topic Report, Understanding the Topic Subscribers Report, Understanding the Topic Subscriber Groups Report in Managing Oracle Coherence.
  • Persistence and Persistence Detail Reports - Additional columns added to these reports. See Understanding the Persistence Detail Report and Understanding the Persistence Report in Managing Oracle Coherence.
  • New ExecutorMBean - Provides statistics for the executor services that run in a cluster. See ExecutorMBean in Managing Oracle Coherence.
  • New ViewMBean - Provides statistics for view caches that run in a cluster. See ViewMBean in Managing Oracle Coherence.
  • New HealthMBean - Provides information about health checks configured in a cluster. See HealthMBean in Managing Oracle Coherence.
  • ServiceMBean - Additional attributes added to the ServiceMBean track Persistent Backups storage utilization. See ServiceMBean in Managing Oracle Coherence.
  • StorageManagerMBean - Additional attributes added to StorageManagerMBean to show Indexing Total Millis and Index Total Units. See StorageManagerMBean in Managing Oracle Coherence.
  • New PagedTopic MBean - Provides statistics for Topic services running in a cluster. See PagedTopic MBean in Managing Oracle Coherence.
  • New PagedTopicSubscriber MBean - provides statistics for Topic Subscribers running in a cluster. See PagedTopicSubscriber MBean in Managing Oracle Coherence.
  • New PagedTopicSubscriberGroup MBean - provides statistics for Topic Subscriber Groups running in a cluster. See PagedTopicSubscriberGroup MBean in Managing Oracle Coherence.
  • WKA Improvements - Added the ability to provide a comma-separated list of addresses when specifying a Well Known Address (WKA). See Using Well Known Addresses.
  • Coherence Operator - A number of major enhancements have been made to the Coherence Operator. See Coherence Operator.
  • Coherence VisualVM Plug-in - Updates have been made to support new functionalities added in 14.1.2. See Coherence VisualVM Plugin Releases.
  • Coherence CLI - Updates have been made to support new functionalities added in 14.1.2. See Coherence CLI Release.
• Federation - Additional attributes added to Origin and Destination MBeans to show errors and replication estimation. See OriginMBean and DestinationMBean in Managing Oracle Coherence.
• Examples - Coherence guides and tutorials are now hosted on the Coherence GitHub Repository and are documented here: Examples - Guides & Tutorials Overview.