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Writing — monte-kim.dev

Writing

Production war stories: backend architecture, AWS, and the occasional retrospective.

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SecurityAuth25 Aug 2026

Concurrent refresh wipes the session

Part 11 of an ongoing series on Moty, a fitness data platform I build and run solo in production: one multi-tenant API, two Next.js frontends. All numbers come from production meas

InfrastructurePostgreSQL25 Aug 2026

Every scheduler runs twice

Part 10 of an ongoing series on Moty, a fitness data platform I build and run solo in production: one multi-tenant API, two Next.js frontends. All numbers come from production meas

SecurityArchitecture25 Aug 2026

Consent logs that could stand in court

Part 9 of an ongoing series on Moty, a fitness data platform I build and run solo in production: one multi-tenant API, two Next.js frontends. All numbers come from production measu

RetrospectiveSecurity25 Aug 2026

The deletion job that never ran once

Part 7 of an ongoing series on Moty, a fitness data platform I build and run solo in production: one multi-tenant API, two Next.js frontends. All numbers come from production measu

ArchitectureAuth25 Aug 2026

Where does the tenant id live?

Part 8 of an ongoing series on Moty, a fitness data platform I build and run solo in production: one multi-tenant API, two Next.js frontends. All numbers come from production measu