"getsockopt: connection timed out" error under high concurrence

[msean]

I rewrite my project from python tornado to go(use iris framwork),the basic function tested ok. when I test under high concurrence.the app always stops a while and then comes out the errors that set object to memcache connect timeout and the memcache process was still running . I doute that the client is closed immediately when the server reached the max client access so that the follow client to connect happens the error.