New & Emerging _ David Gresham _ Building and Event Driven Architecture.pdf

The most comprehensive Oracle applications & technology content under one roof The most comprehensive Oracle applications & technology content under one roof

Building  an  Event  Driven  Architecture  

David  Gresham  Red  Rock  Consul5ng  

The most comprehensive Oracle applications & technology content under one roof

Building  an  Event  Driven  Architecture  

Build  a  more  responsive  enterprise  by  harnessing  an  event  driven  architecture.  

 Prac5cal  demonstra5on  of  Oracle's  Middleware  to  build  an  event  driven  architecture.  

The most comprehensive Oracle applications & technology content under one roof

Agenda  

•  Defini5on  &  Terminology  •  Posi5oning  EDA  in  the  world  of  TLA’s  •  Real  live  Demo  

       Warning:  This  presenta/on  involves  a  hands  on  technology  demo  

The most comprehensive Oracle applications & technology content under one roof

Clouds,  clouds  and  more  clouds  

The most comprehensive Oracle applications & technology content under one roof

Central  Nervous  System  •  The  central  nervous  system  

(CNS)  is  the  part  of  the  nervous  system  that  integrates  the  informa5on  that  it  receives  from,  and  coordinates  the  ac5vity  of,  all  parts  of  the  bodies  of  bilaterian...  It  contains  the  majority  of  the  nervous  system  and  consists  of  the  brain  and  the  spinal  cord  

The most comprehensive Oracle applications & technology content under one roof

EDA  -­‐  Defini5on  

•  Event-­‐driven  architecture  is  a  distributed  architectural  style  composed  of  decoupled  applica5ons  that  interact  by  exchanging  events.  Event-­‐driven  applica5ons  either  ini5ate  or  process  events  through  sense-­‐and-­‐respond.  

The most comprehensive Oracle applications & technology content under one roof

Terminology  

Event  source:  a  component  that  generates  events  Event  sink:  a  component  that  consumes  events  Channel:  which  can  be  a  Stream  or  Rela5on  –  stream:  a  component  through  which  events  flow,  provides  queuing  and  concurrency  

–  rela5on:  iden5fies  the  rela5onship  between  incoming  data  element.  

Processors:  a  component  capable  of  processing  events    •  hVp://en.wikipedia.org/wiki/Petri_net  

The most comprehensive Oracle applications & technology content under one roof

An  EDA  at  work  

Context  Aware  Autonomous  Elements  

Decoupled  

Flexible  

The most comprehensive Oracle applications & technology content under one roof

Perfect  Candidates  for  EDA  

•  Suspicious  Credit  Card  Transac5ons  •  Traffic  Incident  Management  •  Logis5cs  and  shipping  •  Fault  and  Error  handling  

The most comprehensive Oracle applications & technology content under one roof

What  about  SOA  &  BPM  ?  

•  Do  we  throw  away  SOA  and  BPM  ?  

Processes  have  a  dedicated  fixed  defini5on  

Pass  context  sensi5ve,  5me  sensi5ve,  decision  points  to  the  Event  Processor  

Granularity  is  the  key  –  The  Goldilocks  Principle  

No  !    

The most comprehensive Oracle applications & technology content under one roof

Events  are  everywhere...  

The most comprehensive Oracle applications & technology content under one roof

An  EDA  at  work  at  Oracle  

Context  Aware  Autonomous  Elements  

Oracle  CEP  

Oracle  BAM  

Oracle  Coherence  

Oracle  BPM  /  SOA  

The most comprehensive Oracle applications & technology content under one roof

Smart  Fault  Handler  Fault  Occurs  

Oracle    Database  

Oracle  BPEL  &  Oracle  Business  Rules  

Oracle  BPEL  -­‐  Log  

Oracle  BPEL  -­‐  No5fy  

Oracle  BPEL  -­‐  Suspend  

The most comprehensive Oracle applications & technology content under one roof

The  demo...  

The most comprehensive Oracle applications & technology content under one roof

4  Points  to  take  home  

•   EDA  style  architecture  is  not  opposed  to  BPM  &  SOA  

•  EDA  takes  contextual  and  5mely  informa5on  to  trigger  event  sinks  

•  EDA  goals  are  context  driven  dynamic  systems  •  Find  the  right  granularity  –  Your  service  layer  s5ll  have  do  something  meaningful