wcf - Architecture Design for API of Cloud Service -

-

background:

i've local application process user input 3 second (approximately) , return answer (output) user.

(i don't want go details application in purpose of not complicate question , keep pure architectural question)

my goal:

i want make application service in cloud , expose api (for upcoming website , clients connect service without install software locally)

possible solutions:

  1. deploy wcf on cloud , use application there, clients can invoke service , use application on cloud. (rpc style)
  2. use web-api insert request queue , worker role dequeue requests , post results db, client send 1 request creating request in queue, , request getting result (which web-api db).

the problems:

  • if go wcf solution (#1) cant handle great loads of requests, maybe 10-20 simultaneously.
  • if go webapi-queue-workerrole solution (#2) client need request results multiple times can problem.
  • if go webapi-queue-workerrole solution (#2) process isn't sync, client not result once process of request done, need request result.

questions:

  1. in webapi-queue-workerrole solution (#2), can somehow alert client once request has processed , done ? can save client multiple request (for result).

  2. asking multiple times result isn't old stuff ? remmemeber 10 - 15 years ago accepted ? know virustotal api use kind of design.

  3. there better solution ? 1 handle great loads , sync or async (returning result client once done) ?

thank you.

if you're using azure, why not fire more servers , use load balancing handle more load? in way, load increases, have more servers handle requests.

microsoft made available azure service fabric, gives lot of control on spinning , shutting down these services.


Comments

Post a Comment

Popular posts from this blog

Java 3D LWJGL collision -

-
i making 3d java game lwjgl library, , wondering how add collision detection, player not go through models. i using obj models. here objloader class, loads models: package renderengine; import java.io.bufferedreader; import java.io.file; import java.io.filenotfoundexception; import java.io.filereader; import java.util.arraylist; import java.util.list; import models.rawmodel; import org.lwjgl.util.vector.vector2f; import org.lwjgl.util.vector.vector3f; public class objloader { public static rawmodel loadobjmodel(string filename, loader loader){ filereader fr = null; try { fr = new filereader(new file("res/"+filename+".obj")); } catch (filenotfoundexception e) { system.err.println("couldn't load file!"); e.printstacktrace(); } bufferedreader reader = new bufferedreader(fr); string line; list<vector3f> vertices = new arraylist<vector3f...
Read more

spring - SubProtocolWebSocketHandler - No handlers -

-
i have ugly error during deploying spring app on jboss. 18:11:16,025 error [org.apache.catalina.core.containerbase.[jboss.web].[default-host].[/consumer]] (msc service thread 1-7) exception sending context initialized event listener instance of class org.springframework.web.context.contextloaderlistener: org.springframework.context.applicationcontextexception: failed start bean 'subprotocolwebsockethandler'; nested exception java.lang.illegalargumentexception: no handlers @ org.springframework.context.support.defaultlifecycleprocessor.dostart(defaultlifecycleprocessor.java:176) [spring-context-4.1.3.release.jar:4.1.3.release] @ org.springframework.context.support.defaultlifecycleprocessor.access$200(defaultlifecycleprocessor.java:51) [spring-context-4.1.3.release.jar:4.1.3.release] @ org.springframework.context.support.defaultlifecycleprocessor$lifecyclegroup.start(defaultlifecycleprocessor.java:346) [spring-context-4.1.3.release.jar:4.1.3.release] @ org.s...
Read more

methods - python can't use function in submodule -

-
my folder structure this: pythonstuff/ program.py modulea/ __init__.py foo.py bar.py here's code bar.py : def hello(): print("hello, world!") here's code program.py : #!/usr/bin/env python3 modulea import bar bar.hello() i run $ python3 program.py somehow error: file "program.py", line 3, in <module> bar.hello() attributeerror: 'module' object has no attribute 'hello' edit: __init__.py file empty. edit2: after trying realized had bar.py in root directory contained hello() method. bar.py in modulea/ directory empty. add it import os __all__ = [] module in os.listdir(os.path.dirname(__file__)): if module != '__init__.py' , module[-3:] == '.py': __all__.append(module[:-3]) the init .py files required make python treat directories containing packages; done prevent directories common name, such string, unintentionally hiding v...
Read more