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@flhlxix

Uduak Ukpong

@flhlxix·Lagos, Nigeria·Joined September 2026

Writing up on the engineering problems I actually hit in production.

About

I'm a full-stack Developer working across React, Next.js, NestJS, and PostgreSQL.

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Nothing here yet.

Uduak Ukpong's blogs

The Incident Loguduakukpong.hashnode.dev3 posts

About

I'm a full-stack Developer working across React, Next.js, NestJS, and PostgreSQL.

Available for

Nothing here yet.

Uduak Ukpong's blogs

The Incident Loguduakukpong.hashnode.dev3 posts

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Recently published

UUUduak Ukponginuduakukpong.hashnode.dev·2d ago · 10 min read

Row-Level Security for Multi-Tenant Postgres: USING vs WITH CHECK in Practice

This piece isn't about turning RLS on. It's about what goes inside the policies once it is, and about proving they do what you think they do instead of just trusting the SQL. That distinction matters

UUUduak Ukponginuduakukpong.hashnode.dev·4d ago · 11 min read

Build a Postgres Audit Log Your Application Code Cannot Bypass

Most audit logs get written by application code. A service function calls the database, then calls a logging function right after, two separate steps, two separate places to remember. Forget the secon

UUUduak Ukponginuduakukpong.hashnode.dev·Sep 10 · 11 min read

Stop Using a mounted Flag to Fix Theme Flash: Use useSyncExternalStore Instead

The login page went blank in production. Not a broken layout, not a missing stylesheet. Blank: the whole subtree that the sidebar belonged to just disappeared from the DOM right after the page finishe