Node.js Application Architecture.

Transcript

1. Node  Applica,on  Architecture.  
2. ONLY ONE RULE TO FOLLOW
3. STOP REWRITE START REUSE
4. BUT HOW ?
5. ATOMIC IMPLEMENTATION A group of independent modules make a module
6. Build atomic modules with Node.js CommonJS Pattern
7. Build atomic modules with Node.js CommonJS Pattern
8. Sample  CommonJS  Program  
9. Commerce  Experience  Service   •  Service:  Returns  Model  View    in  JSON   •  Consumers   •  Web  Pages   •  Mobile  Web  Pages   •  Na,ve  Mobile  Apps   •  More…    
10. CES  ARCHITECTURE  
11. HOW  CES  WORKS     •  ANALYZES  REQUEST  PARAMETERS   •  ANALYZES  REQUEST  HEADERS   •  DETERMINES  WHAT  MODULES  NEEDED  TO  BE   SENT  TO  THE  USER   •  GET  DATA  FROM  OTHER  SERVICES   •  GENERATE  VIEW  MODEL  FOR  EACH  UI   MODULE   •  RETURN  JSON  OR  HTML  AS  A  RESPONSE  
12. CES  ARCHITECTURE  
13. CES  TIERS     1.  ROUTERS   2.  VIEW  MODEL  BUILDERS   3.  PAGE  CONTROLLERS   4.  PAGE  PROCESSORS   5.  MODULE  PROCESSORS   6.  MODULE  DATA  STORES   7.  SERVICE  HELPERS   EACH  TIER  FOLLOWS  THE  MODULAR  PATTERN  AND   IT  IS  ATOMIC.    
14. ROUTERS  TIER  
15. ROUTER  TIER  
16. CONTROLLER  TIER  
17. CONTROLLER  TIER  
18. PROCESSOR  
19. PROCESSOR     •  PAGE  PROCESSOR  WILL  DELEGATE  WORK  TO   MODULE  PROCESSORS.   MODULE  PROCESSOR   •  ANALYZE  THE  REQUEST  CONTEXT   •  ONE  OR  MANY  CALLS  TO  DATA  STORE   •  AGGREGATE  RESULTS   •  RETURNS  DATA  MODEL  
20. DATA  STORE  TIER  
21. DATA  STORE  TIER   •  ANALYZE  THE  INPUT  OBJECT   •  IF  DATA  EXIST  IN  CACHE  RETURN  IT   •  OTHERWISE  FETCH  DATA  FROM  SERVICE   HELPER.       YOU  CAN  ALWAYS  SEND  A  FLAG  TO  OVERWRITE   THE  CACHE.  
22. SERVICE  HELPER  TIER  
23. Thank  You