# Caching Architecture

## Embedded Cache

* most common
* Copy of data (from db, expensive io call, or expensive calculation) put in memory
* Common with cpu and l4 cache
* Within applications, this is just a map/dictionary

## Client-Service Cache

* cache is placed outside of application and is placed between app and the other system
* Proxy
* Having multiple apps or replicas that talk to the cache instead

## Distributed Cache

* Instead of having one cache, will have multiple caches, to increase avialability of cache, or locate cache closer to consumer
* low latency high volume

## Cloud Cache or CSP Managed Cache

* distributed cache that is managed by cloud provider
* Dont need to manage it
* improve scalability

## Reverse-Proxy Cache

* responses cached
* GET requests
* cache stored inside the proxy
* avoids bombarding servers

## Side-car Cache

* The cache is attached to container running in the pod
* cache per replica
* lifecycle tied to the pod
* low latency
* app and data isolation

## Reverse-Proxy Side-car Cache