Help setting up Memcached in Craft 3 We want to use Memcached but are struggling to find Craft 3 specific config examples and documentation. 

The docs mention several things that seem to lead to dead-ends: 

App config docs here show how to configure the component in config/app.php. But in terms of 'enabling' that component, the docs here say that cacheMethod might need to be used, presumably in config/general.php, but the link to cacheMethod goes nowhere. Also here in the changes in v3 article, is says that cacheMethod has "been removed entirely" and instead point readers to Configuration → Data Caching Config which is a missing section. 

In terms of the server setup, Memcached is enabled and we have 2 nodes/hosts available. 

Very confused, please help.
The docs here are what you need: https://docs.craftcms.com/v3/config/app.html#memcached-example

Which is 99% exactly what Yii uses (since they have an example of using multiple servers): https://www.yiiframework.com/doc/api/2.0/yii-caching-memcache