[HBAR Rate Limit Redesign] Add a counter to expose DAU metrics.

[quiet-node]

Problem

Currently, there is no metrics to track how many DAUs interact with the Relay on daily basis.

Solution

• Add a counter (Prometheus counter) to track unique ETH addresses, and decide how often to reset it (possibly based on HBAR_RATE_LIMIT_DURATION).
• Once the counter is exposed, add a visual representation of it in the dashboard.
• Two possible metrics:
  • DAUs (Daily Active Users) across all APIs.
  • DAUs for eth_sendRawTransaction(). This could potentially be added alongside the HbarLimiter service when a new HbarSpendingPlan is created.

Alternatives

No response

Tasks

Beta Give feedback

1. DAUs (Daily Active Users) across all APIs.
2. Implement active users counter for eth_sendRawTransaction(). #3151
   enhancement +1