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Mariana Oliveira

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Firestore specialist at a Recife SaaS company, helping startups model data for real-time collaborative apps. Published the subcollection vs. map decision framework that is now pinned in the Firebase subreddit.

firestorefirebasearchitecturebackend

Articles by Mariana Oliveira(6)

Handling Flavor-Specific Data Schemas in Firestore

Master the art of managing polymorphic document structures and flavor-specific data in Firestore without sacrificing performance or scalability.

firestorefirebasedata-modelingarchitecture

25 August 2026

Breaking the monolith: the strangler fig pattern in practice

The strangler fig pattern is the safest path from monolith to services, but most implementations fail at the routing layer. This is what a production migration actually looks like — from the first interceptor to the final cutover.

architecturemigrationbackendmicroservices

22 July 2026

Building an agentic data pipeline that self-corrects on errors

Agentic pipelines that can detect and recover from errors are dramatically more robust than linear ones. This guide covers designing self-correcting LLM pipelines with error detection, retry strategies, and graceful fallbacks for production data processing.

llmaiarchitecturebackend

17 July 2026

Offline-first Flutter apps with Firestore

A practical, code-first guide to offline-first Flutter apps with Firestore. Real patterns, common pitfalls, and a checklist you can apply to production Flutter apps.

flutterfirebasefirestoreoffline

2 April 2025

Mariana Oliveira — ANN Tech — ANN Tech