AppFabric
AppFabric is a set of middleware technologies for Windows Server, released by Microsoft. It consists of two main feature areas: AppFabric Hosting
and AppFabric Caching. Microsoft support for these will end in November 2017. The recommended alternative for caching is Redis.
AppFabric Hosting
AppFabric Hosting features provide a way for users to deploy and manage Windows Workflow Foundation (WF) workflows that are hosted in Windows Communication Foundation (WCF) services. AppFabric includes an extension of the Internet Information Services management tool that enables an IIS administrator to monitor the performance of services and workflows. There is also a set of Windows PowerShell commands to manage persistence, hosting, and monitoring tasks.
AppFabric Hosting features provide three main capabilities for services:
Persistence
Hosting
Monitoring
Persistence
Persistence allows Windows Workflow Foundation services to save the state of long running workflows to a database. This makes Workflow services more durable in the event of deliberate suspensions or unexpected hardware failures.