Building a Knowledge Graph RAG Playground with PostgreSQL, Neo4j, and OpenAI
An engineering walkthrough of a RAG playground for comparing Vector Search, Graph Search, and Hybrid Retrieval.

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An engineering walkthrough of a RAG playground for comparing Vector Search, Graph Search, and Hybrid Retrieval.

A small fintech schema, four optimizers, and a few execution plans that did not behave the same way

What I Learned About Service Boundaries, Workflow Ownership, and Failure Handling

Understanding distributed systems made blockchain much easier for me to understand.

Handling retries, idempotency, dead-letter queues, and eventual consistency in distributed order processing systems.

Building a production-inspired wallet backend using NestJS, PostgreSQL, Redis, RabbitMQ, idempotency, DLQ/retry handling, and reconciliation.

Why average latency can hide real production bottlenecks in distributed backend systems

A deep dive into scalable SaaS architecture, event-driven workflows, RBAC, tenant isolation, retries, DLQ, and cloud-native system design.
