Caching

 Caching

For Example : Instagram profile page which is a static information ,retrieve same information by clicking 10 times , for 1st time its retrieved from server ,for getting information next time onwards it can be store in cache ,inorder to reduce latency for getting response in lesser time.

                                                        Instagram profile page Data Retrieval

Two Types:

Memory / Locale Cache :

Example: Memcached

When to be use ?

1. Read Intensive :

2. Static Contents

Distributed / Extended Cache:

Example: Redis

Two Types:

1. Application Server Cache : DB query response query server in cache.

2. CDN