Add load testing scenarios for webhook delivery under concurrent pressure

[Abdulazeem-code]

Description

The existing Artillery config only tests read endpoints. Webhook registration and delivery under concurrent write pressure is untested.

Proposed Solution

Add Artillery scenarios that simulate 50 concurrent users registering webhooks, triggering deliveries, and listing webhooks simultaneously.

Acceptance Criteria

• Artillery scenario for webhook CRUD under load
• Concurrent user simulation (50 virtual users)
• Response time SLA assertions (p95 < 500ms)
• Error rate assertion (< 1%)

Suggested Implementation Areas

artillery.yml or stellar-payment-platform/artillery.yml

Impact

Identifies performance bottlenecks and race conditions in the webhook system before they hit production.

[Olagoke22]

@Olagoke22 has applied to work on this issue as part of the Stellar Wave Program's 8th wave.

I would like to work on this issue maintainer

ℹ️ Repo Maintainers: To accept this application, review their application or assign @Olagoke22 to this issue.

[drips-wave]

Congratulations, @Olagoke22! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on August 31, 2026.

🧑‍💻 @Olagoke22: 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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