`Indexer` state service memory limit

[dDevAhmed]

• 📚 Overview: Refine and implement: Indexer state service memory limit
• 🎯 Objectives:
  • Implement Implementation needed
  • Add unit tests
  • Verify with protocol invariants
• 🧠 Problem Context: Issue identified during audit: - Impact: OOM.
• 🧩 Technical Scope: Relevant repository module.
• ✅ Acceptance Criteria:
  • Implementation needed is functional
  • Tests passed
  • No regressions
• 🔐 Security / Integrity Considerations: Not specified
• ⏳ Complexity & Effort: Medium
• 🔗 References: Internal Ref #BE-213
• 🏷️ Labels: backend, stellar-wave, complexity-medium

---

[somotochukwu-dev]

@somotochukwu-dev has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Good day
I would like to work on this issue and will be pleased if assigned.
Thanks.

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

[drips-wave]

Congratulations, @somotochukwu-dev! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @somotochukwu-dev: 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

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊

[drips-wave]

This issue has been marked as completed by a Drips Wave moderator for @somotochukwu-dev as part of the Stellar Wave Program's 6th Wave 🥳

Moderator's reason: [Auto-assessed] The PR was merged by a maintainer and directly addresses the issue by implementing configurable memory limits and eviction logic for the blockchain state service. It includes comprehensive unit tests and documentation updates that satisfy all acceptance criteria.

😎 @somotochukwu-dev: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here.

🧑‍💻 Repo maintainers: How'd the contributor do? Leave a review to share your experience working with them.

ℹ️ Note: This issue was marked complete via moderation. Points were issued even though the GitHub issue remains open.