As a developer, one can face unavoidable situations to recycle the application pool. "iisreset" is an option. But as "iisreset" is an expensive command, alternatively you can just recycle a particular application pool using the following command-
cscript c:\windows\system32\iisapp.vbs /a "[AppPoolName]" /r
Or create a batch file for this:
ResetAppPool.bat
cscript c:\windows\system32\iisapp.vbs /a “%1? /r
And to recycle an Application pool, run ResetAppPool.BAT <AppPoolName>