⚡ Memory-Optimization | Refactor Transient Calculation State to Temporary Storage

[Sadeequ]

Impact Severity: Medium

Module: stellarflow-contracts/storage/ephemeral.rs

Description

Non-critical state nonces and transient swap path buffers are currently stored in persistent memory, incurring unnecessary ledger rent.

Technical Requirements:

• Migrate swap route computation buffers to env.storage().temporary()

• Verify core token balances remain isolated in persistent()

• Run resource cost profiling to confirm rent reduction per swap execution

[Ofuree]

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

Hi Chief Maintainer, I'd like to take this on if it's still unassigned.

I've read through the issue description and the linked discussion, and I have a clear picture of what the change involves. My plan would be to start by reproducing the current behavior locally so I'm working from evidence rather than assumption, then trace it back to the source.

From there I'd implement the change in the smallest reasonable scope, avoiding unrelated cleanup that would make the diff harder to review. I'll add tests covering both the described case and the obvious edge cases around it, and update the documentation if the change affects anything user-facing.

I'll follow the contribution guidelines in the repo and post an update here if I hit anything that changes my approach. If you'd prefer I outline the implementation before writing code, I'm happy to do that instead.

Let me know if I should go ahead.

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

[Okorie2000-code]

@Okorie2000-code has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

I'd be happy to take this on—please assign it to me. Thank you!

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Okorie2000-code to this issue.

[Ukorstack]

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

I have a clear understanding of the issue and would appreciate being assigned to work on it.

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

[drips-wave]

Congratulations, @Ofuree! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @Ofuree: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

Warning

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