How to Seamlessly Migrate a Live GraphQL Backend to RESTHow to Seamlessly Migrate a Live GraphQL Backend to REST
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Abdullah Amir
• 1d
Migrating a live GraphQL backend to REST — without taking down a production app.
Here's exactly how I did it on EarnDLT (a blockchain carbon compliance platform used by enterprises for EU CBAM reporting):
The problem: Third-party providers needed REST endpoints. The entire backend was NestJS GraphQL. Zero downtime allowed.
What I actually did: → Mapped every query and mutation to equivalent REST endpoints first (on paper, before touching code) → Built the REST layer in parallel — didn't touch existing GraphQL until REST was fully tested → Coordinated rollout order with the team so dependent services switched one by one → Fixed 3 Next.js frontend bugs blocking critical user flows while I was in the codebase
What I learned: The biggest risk in live migrations isn't the technical work — it's the order of operations. Get that wrong and you break things that were working fine.
Have you ever had to migrate architecture on a live system? What was the hardest part?
#NestJS #GraphQL #SoftwareEngineering #BackendDevelopment #TypeScript
Next.jsTypeScriptNestJS
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