vexxhost/openstack-operator
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openstack-operator/docs/components/memcached.md
Mohammed Naser 6dbb9475f9 Initial commit 
This initial commit includes support for Mcrouter, Memcached,
basic CI tests as well as Helm charts for deploying things.

Depends-On: https://review.opendev.org/713107
Depends-On: https://review.opendev.org/713115
Change-Id: I0b1ab6d8e716460e095bc3953614e336620f984e
2020-03-17 19:38:31 -04:00

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Memcached

Memcached is an in-memory key-value store for small chunks of arbitrary data (strings, objects) from results of database calls, API calls, or page rendering.

It's used in OpenStack for a lot of token caching and in other services such as Nova to minimize load against the database cluster. This operator allows you to deploy it and it automatically exposes a single IP address which will point towards any of the two Mcrouter instances which are pushing data out to the Memcached instances.

It will also automatically take the total number of megabytes and split it across two shards (so setting megabytes to 128) will result in two instances each with 64 megabytes which are load balanced via Mcrouter.

Example

apiVersion: infrastructure.vexxhost.cloud/v1alpha1
kind: Memcached
metadata:
  name: sample
spec:
  megabytes: 128