Ngozi Nwosu

Author

Firebase security rules author and educator at an Enugu tech community, running workshops on Firestore rules testing. Published the systematic rules-testing playbook that has been read by 20 000 developers.

firebasesecurityfirestoretesting

Articles by Ngozi Nwosu(3)

Firebase Security Rules at Scale: Avoiding the N+1 Permission Check Problem

In this article, we delve into how to manage Firestore security rules effectively at scale while avoiding the N+1 permission check problem. We will explore the systematic approach to designing security rules, test coverage strategies, and the use of Firestore's rules emulator to ensure robust and efficient access controls.

FirebaseFirestoreSecurity RulesN+1 ProblemTesting

22 July 2026

Testing Flutter apps with Firebase emulators

Firebase emulators let you run Firestore, Auth, and Functions locally during development and tests — no live project needed. Here is the setup.

flutterfirebasetestingemulators

6 June 2026

A/B testing in Flutter apps

A practical, code-first guide to a/B testing in Flutter apps. Real patterns, common pitfalls, and a checklist you can apply to production Flutter apps.

flutterab-testingfirebaseexperiments

1 March 2026