fullstackfusions — Engineering Blog https://fullstackfusions.com/blog Architecture, databases, and systems thinking by Mihir Patel. en-us Sat, 02 May 2026 03:17:47 GMT <![CDATA[The Infrastructure That Enforces Itself: Compliance-Grade Multi-Tenant SaaS on Amazon EKS]]> https://fullstackfusions.com/blog/posts/2026-04-28-new-way-of-building-multi-tenant-saas/ https://fullstackfusions.com/blog/posts/2026-04-28-new-way-of-building-multi-tenant-saas/ Tue, 28 Apr 2026 00:00:00 GMT <![CDATA[Deploying Production-Grade LLM Inference on AWS EKS — A Hands-On Deep Dive]]> https://fullstackfusions.com/blog/posts/2026-04-21-deploying-production-grade-inference-on-aws-eks/ https://fullstackfusions.com/blog/posts/2026-04-21-deploying-production-grade-inference-on-aws-eks/ Tue, 21 Apr 2026 00:00:00 GMT <![CDATA[PageIndex and Vectorless RAG — A Structural Alternative for Professional Documents]]> https://fullstackfusions.com/blog/posts/2026-04-02-pageindex-vectorless-rag-structured-documents/ https://fullstackfusions.com/blog/posts/2026-04-02-pageindex-vectorless-rag-structured-documents/ Thu, 02 Apr 2026 00:00:00 GMT <![CDATA[Mamba and SSMs — What the Generation Backbone Change Means for RAG]]> https://fullstackfusions.com/blog/posts/2026-04-01-mamba-ssm-rag-generation-backbone/ https://fullstackfusions.com/blog/posts/2026-04-01-mamba-ssm-rag-generation-backbone/ Wed, 01 Apr 2026 00:00:00 GMT <![CDATA[The RAG Supporting Stack — Memory, Prompt Engineering, Fine-tuning, and Embeddings]]> https://fullstackfusions.com/blog/posts/2026-03-31-rag-supporting-stack-memory-embeddings/ https://fullstackfusions.com/blog/posts/2026-03-31-rag-supporting-stack-memory-embeddings/ Tue, 31 Mar 2026 00:00:00 GMT <![CDATA[RAG in Personal Banking — Scale, AML, and Transaction Intelligence]]> https://fullstackfusions.com/blog/posts/2026-03-30-rag-personal-banking-systems/ https://fullstackfusions.com/blog/posts/2026-03-30-rag-personal-banking-systems/ Mon, 30 Mar 2026 00:00:00 GMT <![CDATA[RAG in Wealth Management — Fiduciary Constraints and Retrieval Design]]> https://fullstackfusions.com/blog/posts/2026-03-29-rag-wealth-management-systems/ https://fullstackfusions.com/blog/posts/2026-03-29-rag-wealth-management-systems/ Sun, 29 Mar 2026 00:00:00 GMT <![CDATA[RAG in Hospital Management Systems — Zero Hallucination Tolerance]]> https://fullstackfusions.com/blog/posts/2026-03-28-rag-hospital-management-systems/ https://fullstackfusions.com/blog/posts/2026-03-28-rag-hospital-management-systems/ Sat, 28 Mar 2026 00:00:00 GMT <![CDATA[RAG in Travel & Tourism Systems — GDS, Visa Routing, and the AI Concierge]]> https://fullstackfusions.com/blog/posts/2026-03-27-rag-travel-tourism-systems/ https://fullstackfusions.com/blog/posts/2026-03-27-rag-travel-tourism-systems/ Fri, 27 Mar 2026 00:00:00 GMT <![CDATA[The Four RAG Levels — A Decision Framework for Enterprise Systems]]> https://fullstackfusions.com/blog/posts/2026-03-26-rag-four-levels-decision-framework/ https://fullstackfusions.com/blog/posts/2026-03-26-rag-four-levels-decision-framework/ Thu, 26 Mar 2026 00:00:00 GMT <![CDATA[The Invisible Engine: What LLM Observability Actually Looks Like in Production]]> https://fullstackfusions.com/blog/posts/2026-03-18-importance-of-llm-observability/ https://fullstackfusions.com/blog/posts/2026-03-18-importance-of-llm-observability/ Wed, 18 Mar 2026 00:00:00 GMT <![CDATA[LLM Fine-Tuning: What Nobody Tells You Until You've Burned the GPU Budget]]> https://fullstackfusions.com/blog/posts/2026-03-16-llm-fine-tuning/ https://fullstackfusions.com/blog/posts/2026-03-16-llm-fine-tuning/ Mon, 16 Mar 2026 00:00:00 GMT <![CDATA[Databases: A Lead Engineer's Field Guide to Picking the Right Tool]]> https://fullstackfusions.com/blog/posts/2026-03-15-databases-a-lead-engineers-field-guide/ https://fullstackfusions.com/blog/posts/2026-03-15-databases-a-lead-engineers-field-guide/ Sun, 15 Mar 2026 00:00:00 GMT <![CDATA[Subdomains vs Path-Based Routing: The Architecture Decision Nobody Talks About]]> https://fullstackfusions.com/blog/posts/2026-03-14-subdomain-vs-path-based-routing/ https://fullstackfusions.com/blog/posts/2026-03-14-subdomain-vs-path-based-routing/ Sat, 14 Mar 2026 00:00:00 GMT