F# Server based programming 

Benefits

•Concise succinct code

•Advanced asynchronous support

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•A comparison of styles

F#

•1 source file

•43 lines

•2 types

C#

•2 source files

•166 lines

•2 type

•C# ObjectPool

•F# ObjectPool

•Sockets

2 Models of Operation

•AsyncResult Model

•SocketAsyncEventArgs Model

•IAsyncResults Model

Pros

•Well documented API

•Can be simplified with helpers in Asynchronous workflows in F#

•Fast to get an initial result

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SocketAsyncEventArgs Model

Pros

•Less memory allocations

•Better performance

•Closer to the metal

•Performance Differences

•5 minute test

•50 clients connecting to the server

•15ms interval between each one 

•Server sends each client a 128 byte message every 100ms

•Total of 500 messages per second

•CPU & Threads

•Memory

•Garbage collection

•F# - Fracture IO

•Open source high performance Socket, Pipeline, and agent library

•Introducing Fracture-IO

•High performance Socket library

•Highly compositional pipeline library

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•Pipelines

•Closed Pipelines

–Tomas Petricek

•Image Processing Pipeline

•Open Pipelines

–Pipelets

•Closed Pipelines

•Open Pipelines

Advantages

•Composability

•Reusability

•Can be used at any stage of processing

•Separation of concerns

•Flexible routing arrangements i.e. round robin, multicast, content based routing

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•Future Directions

•Distributed Pipelets

–Wave Pipeline

–Synchronous buffered Pipeline

•Advanced agent based programming

- Supervision

- Pooling