format: Add External Redis Cache Configuration to Cache Management Docs

This PR introduces a new section to the Cache Management documentation to discuss the benefits and configuration steps for using an external Redis compatible cache with ReactiveSearch.io. A comparative analysis between the default internal cache (Ristretto) and an external Redis cache is also provided to assist users in making an informed decision based on their specific caching needs.

Key changes include:

External Cache Configuration Section: Outlines how users can configure an external Redis cache and highlights the advantages of using Redis for more persistent and flexible caching solutions.
Comparison Table: A new table comparing the internal Ristretto cache and the external Redis cache across various features like persistence, durability, scalability, data eviction policies, and high availability.
Use Cases: Brief explanation of scenarios where an external cache would be more beneficial than the default internal cache.

These updates aim to provide clear guidance on when and why to consider an external caching mechanism, and how to implement it for improved search performance with ReactiveSearch.io.

The documentation now equips users with the necessary information to leverage Redis' advanced caching capabilities, ensuring high availability and scalability for their search infrastructure.

appbaseio / Docs

format: Add External Redis Cache Configuration to Cache Management Docs #424