feat: store total node count in Redis key

[chetna-mittal]

Is your feature request related to a problem?

The event-collector currently relies on a static cached value for the total node count, which does not account for new nodes that join after the cache is set. This leads to outdated data being used in operations.

Describe the solution you'd like

Implement functionality to dynamically store and update the total node count in a Redis key. The event-collector can then retrieve this value from Redis to ensure operations are performed using the most up-to-date node count.