Function Execution

This section describes how to execute application functions to achieve linear scalability. It explains how function execution works and lists specific use cases.

Function execution can be used only along with the pool functionality. For more information about the pool API, see Using Connection Pools. Only C++ versions of Function Execution API interfaces, classes, and methods (like FunctionService::onRegion) are shown in text. The code examples show C++ and C#.

• Understanding Data-Aware Function Routing

  Achieving linear scalability is predicated upon being able to horizontally partition the application data such that concurrent operations by distributed applications can be done independently across partitions.

• How Functions Execute

  This section discusses the basic function execution process, how highly available functions execute after a failure, and the execution scenarios for data-dependent and data-independent functions.

• Executing Functions

  Using the function execution service, you can execute application functions on a single server member, in parallel on a subset of server members, or in parallel on all server members of a distributed system.