Practical CQRS - Newsletter Double Opt-In

Why the MVC pattern solves a problem that doesn't exist in the web, how Command Query Responsibility Segregation
(CQRS) can reduce the complexity of request handling and offers you chances for performance optimizations.
A talk at the PHP USERGROUP DRESDEN.

Transcript

1. CQRS  in  der  Praxis   NEWSLETTER  DOUBLE-­‐OPT-­‐IN  
2. MVC  –  Pa=ern   •  1979  formuliert   •  SoGwareentwurf  für  Desktop-­‐Anwendungen  
3. MVC  –  Pa=ern  –  klassisch   Controller   Model   View   View  
4.               Server                 Client   MVC  –  Pa=ern  –  Web   Controller   Model   View  
5.               Server                 Client   Controller   Model   View   MVC  –  Pa=ern  –  Web  
6.               Server                 Client   Controller   Model   View   MVC  –  Pa=ern  –  Web  
7. MVC  –  Pa=ern  –  Web                 Server                 Client   Controller   Model   View  
8.               Server   MVC  –  Pa=ern  –  Web                 Client   Controller   Model   View  
9. MVC  –  Pa=ern  –  Web  –  Probleme   •  Systemgrenze   •  HTTP-­‐Request   •  Subject-­‐Observer   •  Single-­‐Responsibility  
10. MVC  –  Pa=ern  –  Web  –  Probleme   •  HTTP-­‐Request   •  Subject-­‐Observer   •  Single-­‐Responsibility  
11. MVC  –  Pa=ern  –  Web  –  Probleme   •  HTTP-­‐Request   •  Subject-­‐Observer   •  Single-­‐Responsibility  
12. MVC  –  Pa=ern  –  Web  –  Probleme   •  HTTP-­‐Request   •  Single-­‐Responsibility  
13.               Server   HTTP-­‐Request                 Client   Controller   Model   View   GET  
14.               Client                 Server   HTTP-­‐Request   Read   Controller   Model   View   GET  
15.               Client                 Server   HTTP-­‐Request   Read   Controller   Model   View   GET   Write   Controller   POST  
16.               Client                 Server   HTTP-­‐Request   Read   Controller   Model   View   GET   Write   Controller   POST  
17. Probleme   •  HTTP-­‐Request   •  Single-­‐Responsibility  
18. Probleme   •  Single-­‐Responsibility  
19.               Client                 Server   Single-­‐Responsibility   Read   Controller   Model   View   GET   Write   Controller   POST  
20.               Client                 Server   Single-­‐Responsibility   Read   Controller   Model   View   GET   POST   Read   Handler   Write   Handler   Write   Controller  
22.               Client                 Server   CQRS   Read   Controller   Model   View   GET   POST   Read   Handler   Write   Handler   Write   Controller  
23.               Client                 Server   CQRS  –  Command  Query  Responsibilty  SegregaXon   Read   Controller   Model   View   GET   POST   Query   Handler   Command   Handler   Write   Controller  
24. Livecoding  
25.               Client                   CQRS  +  SOA  –  Our  best  pracXce   Query   Handler   Reposi-­‐ tory   View   GET   POST   GET   GetRequest Handler   PostRequest Handler   Called  dynamically   Command   Handler   ReadService   Query   WriteService   Command   Called  explicitly  
26. Empfehlungen   •  Einführung  in  CQRS   h=p://marXnfowler.com/bliki/CQRS.html   •  MVC  in  Webanwendungen     h=ps://entwickler.de/online/php/model-­‐view-­‐controller-­‐in-­‐ webanwendungen-­‐138762.html   •  Wartbares  Design  dank  CQRS   h=ps://entwickler.de/online/development/wartbares-­‐design-­‐dank-­‐ cqrs-­‐139615.html  
27. Empfehlungen   h=ps://github.com/fortuneglobe/icehawk  
28. Vielen  Dank   •  Slides  abrubar   h=p://www.phpind.de       •  Beispiel-­‐Projekt  abrubar   h=ps://github.com/PHPinDD/cqrs-­‐newsle=er-­‐double-­‐opt-­‐in