Optimize Blockchain Indexing Lag Monitoring

[gabito1451]

Context

Operational visibility.

Problem

The indexer might fall behind without the dev team knowing.

Suggested Execution

• Implement a comparison between 'LocalHorizonCursor' and 'OnChainLatestLedger'.
• Emit metrics to Prometheus.

Acceptance Criteria

• Real-time dashboard showing indexing lag.
• Automated alert if lag > 10 ledgers.

References

• backend/src/indexer/health.service.ts

[probablyABug]

@probablyABug has applied to work on this issue as part of the Stellar Wave Program's 4th wave.

hi, i would like to work on this.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @probablyABug to this issue.