cache-collector

Cache Collector Dynamic cache key collector for easy purging. Background One common problem with large WordPress sites that utilize Memcache is the problems that arise when trying to purge cache keys that are dynamically generated. For example, if a cache key is the hash of a remote request. You would need to calculate the hashed cache key to properly purge it from the cache. Another common problem would be trying to purge all the cache keys in a specific group (Memcache doesn't support group purging). Cache Collector solves this by storing cache/transient keys in collections. These collections can then be purged in a single command. Here's a real-world use case: When viewing a post, the post's related posts are fetched from a remote source and displayed to the user. This operation is expensive due to the remote request and needs to be cached. When the post is updated, the related post cache needs to be flushed as well. Enter Cache Collector. When the post is updated, the related post cache key is added to a collection. When the post is updated, the cache key that is connected to the post will automatically be purged. To flip this around, say the remote data source is having