Realtime: WebSocket / SSE live stats for leaderboards and campaign progress

[joelpeace48-cell]

Context

Dashboards/leaderboards poll for updates. Live campaigns benefit from realtime push of progress and
ranking changes.

Scope

• SSE or WebSocket channel publishing campaign/leaderboard deltas from indexer events.
• Backpressure + reconnection with last-event-id resume; auth on the channel.
• Fallback to polling when realtime is unavailable.

Acceptance criteria

• Connected clients receive live updates with reliable reconnect/resume.

Verification

• Test pushes an event and asserts subscribed clients receive it; reconnect resumes without gaps.

[Osifowora]

@Osifowora has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

​Hi maintainer, I would love to work on this issue. I can get started on it right away.

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

[otobongdev]

@otobongdev has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

i can fix this issue

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[AlphaMaleBaDI]

@AlphaMaleBaDI has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi, I am applying to implement real-time WebSocket / SSE live statistics for leaderboards and campaign progress tracking.

To deliver a pristine, 100% compliant real-time synchronization layer matching all stated acceptance criteria, I plan to:

• Establish a highly resilient SSE (Server-Sent Events) or WebSocket publishing channel within the core backend to stream live campaign and leaderboard delta updates driven by indexer events.
• Implement robust backpressure management and custom reconnection protocols supporting last-event-id tracking to ensure client resume actions complete flawlessly without data gaps.
• Secure the streaming channel using a fast token-based authentication mechanism to validate incoming connection context before allowing access to real-time events.
• Design an intelligent frontend client layer that seamlessly falls back to optimized HTTP polling interfaces whenever a real-time transport connection becomes degraded or completely unavailable.
• Expand the integration test infrastructure to push mock delta events and systematically assert that subscribed clients receive them sequentially, verifying error-free reconnections.

Since my local workspace is perfectly calibrated for full-stack real-time networking protocols, indexing event streams, and automated subscription test environments, I can jump straight into the message pipeline configurations and submit a highly polished PR immediately. Ready to lock it in!

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

[Joel234-png]

@Joel234-png has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

i can work on this

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[Ajibose]

@Ajibose has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I would love to work on this

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

[NeduTheDev1]

@NeduTheDev1 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Please assign to me maintainer i can get it done no issues

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[Kenlachy]

@Kenlachy has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I will like to work on this issue. Please assign to me. Thank you.

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[luciachizaram]

@luciachizaram has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Please assign this issue to me

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[grantfox-oss]

🦊 GrantFox — @luciachizaram has been assigned to this issue as part of the Official Campaign campaign!

Next steps:

1. Open a Pull Request referencing this issue (e.g., Closes #815)
2. Your PR will be reviewed by the FinesseStudioLab maintainers

Good luck! Track your progress on GrantFox.