Redislabs' memcache with a europe-west appengine app

[gu...@genotek.ru]

I would like to use memcache in my custom flexible app. The memcache setup guide suggests

1. Create a Memcached Bucket using Memcached Cloud. Be sure to specify GCE/us-central1 as the Cloud for the lowest latency.

Since my app is in the europe-west zone, would using GCE/us-central1 defeat the purpose of memcache (speeding up the app)?

Thanks.

[George (Cloud Platform Support)]

You surely get lowest latency for us-central1 if your Redis instance is situated in that zone. One of the first steps in setting up Redis for your flexible environment is hosting a Redis instance on Google Compute Engine.This instance can be located in the zone of your choice. You can read more detail on the "Connect to Redis from Node.js on Google App Engine Flexible Environment" page, "Start a Redis server" sub-chapter. 

REDIS clusters are only deployed on Compute Engine clusters. They can be used by App Engine Flex as its Memcache, since Flex cannot use GAE Standard's Google managed Memcache. You can set up your Compute Engine Redis instance in a conveniently situated zone, which grants the lowest latency, as judging by your planned usage pattern. For instructions on how to set up your Redis instance you can check the "How to Set Up Redis on Google Compute Engine" online document.   

[Josh Moore]

The set-up guide referenced is assuming the GAE app is located in us-central1.  As your app is in europe-west region, you correctly note that spinning up your memcached node in us-central1 would defeat the purpose.  Instead, you should place the node close to your app's location, such as using europe-west1.

Ultimately, this should be documented better here.  I'll make sure we update the docs to have clearer guidelines and not be "US-centric" in its assumptions.  Thanks for letting us know!

On Tue, Dec 19, 2017 at 9:22 AM 'George (Cloud Platform Support)' via Google App Engine <google-a...@googlegroups.com> wrote:

You surely get lowest latency for us-central1 if your Redis instance is situated in that zone. One of the first steps in setting up Redis for your flexible environment is hosting a Redis instance on Google Compute Engine.This instance can be located in the zone of your choice. You can read more detail on the "Connect to Redis from Node.js on Google App Engine Flexible Environment" page, "Start a Redis server" sub-chapter. 

REDIS clusters are only deployed on Compute Engine clusters. They can be used by App Engine Flex as its Memcache, since Flex cannot use GAE Standard's Google managed Memcache. You can set up your Compute Engine Redis instance in a conveniently situated zone, which grants the lowest latency, as judging by your planned usage pattern. For instructions on how to set up your Redis instance you can check the "How to Set Up Redis on Google Compute Engine" online document.   

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Josh Moore |

Cloud Solutions Engineer |

josh...@google.com |