Thoery coding: UI -> people Read and think -> people Do, action ... something -> UI push Command(s) -> Command Handle -> Build Object Domain by Events using Repository -> Domain call action(s) do business -> Repository store Events into EventSourcing Db -> Fire Event -> Event Handle write to Database Read -> Thin Query Facade from Db read -> UI ...

open dotnet ecommerce platform base cqrs, ddd and event sourcing. https://github.com/badpaybad/opendotnet-ecommerce-platform

I just do like that: Each command's type will have own queue to store and own thread to execution. Thread will create automaticlly by type of command. Plz look at the code bellow But I wonder that, how many Thread should be create in an application ( for window services, desktop application, web application hosted on IIS) Could some one help me to answer this question?