Change Details

As we had discussed [[ https://docs.google.com/document/d/1wY4qcryJKTSg2TxoEqXoTo0hWwVT-5Gq_kJwn3SIPls/edit | previously]], there are keys which we would like them to use the [[ https://github.com/facebook/mcrouter/wiki/Two-level-caching | WarmUpRoute ]] so to relieve some of the network traffic between our app servers and our memcached cluster. We have created and deployed a mcrouter route called `/*/mw-with-onhost-tier`, which right now is configured exactly like the `/*/mw` route. The configuration which will route `/*/mw-with-onhost-tier` to use the WarmUpRoute can be enabled per MediaWiki server by setting `profile::mediawiki::mcrouter_wancache::use_onhost_memcached` to `true`. We now need to have MediaWiki add the `/*/mw-with-onhost-tier` prefix to keys we want to be read from the onhost memcached, for instance the `WANObjectCache` keys. After this is deployed to MediaWiki, we can start gradually roll out to all clusters.

As we had discussed [[ https://docs.google.com/document/d/1wY4qcryJKTSg2TxoEqXoTo0hWwVT-5Gq_kJwn3SIPls/edit | previously]], there are keys which we would like them to use the [[ https://github.com/facebook/mcrouter/wiki/Two-level-caching | WarmUpRoute ]] so to relieve some of the network traffic between our app servers and our memcached cluster. SRE has created and deployed a mcrouter route called `/*/mw-with-onhost-tier`, which right now is configured exactly like the `/*/mw` route. The configuration which will route `/*/mw-with-onhost-tier` to use the WarmUpRoute can be enabled per MediaWiki server by setting `profile::mediawiki::mcrouter_wancache::use_onhost_memcached` to `true`. We now need to have MediaWiki add the `/*/mw-with-onhost-tier` prefix to keys we want to be read from the onhost memcached, for instance the `WANObjectCache` keys. After this is deployed to MediaWiki, we can start gradually roll out to all clusters and test it in production.

As we had discussed [[ https://docs.google.com/document/d/1wY4qcryJKTSg2TxoEqXoTo0hWwVT-5Gq_kJwn3SIPls/edit | previously]], there are keys which we would like them to use the [[ https://github.com/facebook/mcrouter/wiki/Two-level-caching | WarmUpRoute ]] so to relieve some of the network traffic between our app servers and our memcached cluster. We haveSRE has created and deployed a mcrouter route called `/*/mw-with-onhost-tier`, which right now is configured exactly like the `/*/mw` route. The configuration which will route `/*/mw-with-onhost-tier` to use the WarmUpRoute can be enabled per MediaWiki server by setting `profile::mediawiki::mcrouter_wancache::use_onhost_memcached` to `true`. We now need to have MediaWiki add the `/*/mw-with-onhost-tier` prefix to keys we want to be read from the onhost memcached, for instance the `WANObjectCache` keys. After this is deployed to MediaWiki, we can start gradually roll out to all clusters and test it in production.