Can logged in user can see the fresh update instantly

It works fine, give it a try.

Yea it’s working fine.
WordPress and other plugins are using Transient for storing DB query results. Does the Redis cache this transient also.

Thanks

Yes.

I am just wondering how do the values are getting updating after making any changes in the posts/pages. Can you help me to understand the process?

I’d suggest reading about Object Caching in WordPress. There are many articles out there explaining it. Here is one example: https://wp-rocket.me/blog/object-caching-use-wordpress/

Thanks. Are we using Write through or write back cache?

Sorry, I don’t know what you’re using.

I am using this plugin on my local machine before installing it on the client environment. It would be better if you can share how the updated content is caching on Redis. What method you are using in the plugin.

Uploaded files are not cached.