Build Grafana/Prometheus dashboards for API latency and error rate

[Gbangbolaoluwagbemiga]

Overview

Instrument the hosted API with Prometheus-compatible metrics (request latency histograms, error-rate counters, in-flight analysis-job gauges) and build Grafana dashboards to visualize them.

Background / Context

Builds directly on the structured logging/tracing work in #1149, giving the team real-time visibility into API health once mainnet traffic starts flowing, which is also a prerequisite for the canary-rollout triggers in #1141.

Goal

A Grafana dashboard showing p50/p95/p99 API latency, error rate by endpoint, and analysis-job throughput, backed by a Prometheus metrics endpoint exposed by the API.

Scope of Work

1. Expose a /metrics endpoint from the API in Prometheus text format.
2. Instrument key routes with latency histograms and error counters.
3. Build and version-control a Grafana dashboard JSON definition.

Out of Scope

• Standing up the Prometheus/Grafana infrastructure itself if using a managed provider — configuration only.

Acceptance Criteria

• /metrics endpoint live and scraped.
• Dashboard JSON committed and importable, showing latency/error-rate panels.

Files & Pointers

• frontend/app/api

References

• https://prometheus.io/docs/instrumenting/exposition_formats/

Dependencies / Related

Depends on #1149. Feeds #1141, #1152.

Difficulty & Estimated Effort

Medium — ~3 days.

[ruthoreaji-123]

@ruthoreaji-123 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hello maintainer. Kindly assign this to me as I will deliver accurate result. THANKS

ℹ️ Repo Maintainers: To accept this application, review their application or assign @ruthoreaji-123 to this issue.

[bakarezainab]

@bakarezainab has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi Maintainer, I am a web3 fullstack developer. I’ve reviewed this issue and I understand the requirements. I’d like to implement this and submit a clean PR. Kindly assign this issue to me

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