samson SamsonIbrahim
SamsonIbrahim
/ `notification-system-spec.md`
Created
May 25, 2026 09:34
Technical spec and answers for Cowrywise backend engineer application. It covers idempotency, database optimization, notification system, concurrency, rate limiting, caching, webhooks, and disaster recovery.
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| ````md | |
| # Notification System Technical Specification | |
| **For:** Cowrywise Backend Engineer Role | |
| **Scale:** 1M+ users | |
| **Providers:** Push, SMS, Email | |
| --- | |
| # 1. Requirements |