I'm just a user, but I think you should have access. When I SSH to my 
flexible environment machine, I've run the following command to check that 
this works:

$ printf "get mykey\r\n" |nc -v 172.17.0.3 11211
172.17.0.3: inverse host lookup failed: Unknown host
(UNKNOWN) [172.17.0.3] 11211 (?) open
END

(the END) part is the reply back from the server saying the key is not 
found.

I ran the same command inside the docker container with my application and 
it also works. So .... I think the value you are getting should work?

(I'm pretty sure memcache is working with our Python app, but that uses the 
python-compat APIs, so I'm not 100% sure if that connects to the same 
address/port or not).



On Thursday, April 21, 2016 at 5:48:35 AM UTC-4, Alejandro Recarey wrote:
>
> Hi all,
>
> I have started using App Engine and am super happy with the docs and 
> examples. Kudos!
>
> However, I'm stumbling upon an issue with trying to use the memcache 
> service. I don't even know if it should work for the flexible environment. 
> I'm using the environment variables:
> MEMCACHE_PORT_11211_TCP_ADDR
>
> and:
> MEMCACHE_PORT_11211_TCP_PORT
>
> , and by logging I'm seeing that they are actually being set in 
> production, so I assume I should have access. 
>
> Howeve once in production I'm seeing this error:
>
> Error: Server at 172.17.0.3:11211 not available
>
> So they are being set (my defaults are "localhost" and "11211"), it just 
> seems I don't have access.
>
> Should the flexible App Engine environment have access to the Memcached 
> pool? Or do I have to spin up my own servers?
>
> Thanks!
>
> Alex
>
>
>

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