HzMinds Engineering https://www.hzminds.com/engineering/ Notes from building, modernizing, and operating real software systems. en Mon, 07 Sep 2026 00:00:00 +0000 Why an Enterprise API Becomes Slow as It Scales—and How to Diagnose It https://www.hzminds.com/engineering/why-enterprise-apis-get-slow-at-scale-and-how-to-diagnose-it/ https://www.hzminds.com/engineering/why-enterprise-apis-get-slow-at-scale-and-how-to-diagnose-it/ A step-by-step diagnostic process for enterprise API slowdowns—N+1 queries, connection pool exhaustion, blocking async code, and how to find the real bottleneck fast. Performance HzMinds Engineering Team Mon, 07 Sep 2026 00:00:00 +0000 Designing a Multi-Tenant SaaS Platform With ASP.NET Core https://www.hzminds.com/engineering/designing-a-multi-tenant-saas-platform-with-aspnet-core/ https://www.hzminds.com/engineering/designing-a-multi-tenant-saas-platform-with-aspnet-core/ A practical engineering guide to tenant isolation, resolution, authorization, and scaling trade-offs for multi-tenant SaaS platforms built on ASP.NET Core. SaaS HzMinds Engineering Team Mon, 31 Aug 2026 00:00:00 +0000 Building a Production-Ready RAG System for Enterprise Documents https://www.hzminds.com/engineering/building-a-production-ready-rag-system-for-enterprise-documents/ https://www.hzminds.com/engineering/building-a-production-ready-rag-system-for-enterprise-documents/ A practical engineering guide to building retrieval-augmented generation over enterprise documents, covering chunking, hybrid search, access control, and hallucination mitigation. RAG & LLM HzMinds Engineering Team Mon, 24 Aug 2026 00:00:00 +0000 How to Modernize a Legacy .NET Application Without Rewriting Everything https://www.hzminds.com/engineering/modernizing-legacy-dotnet-applications-without-a-rewrite/ https://www.hzminds.com/engineering/modernizing-legacy-dotnet-applications-without-a-rewrite/ A practical guide to modernizing legacy .NET Framework apps incrementally, using the strangler-fig pattern, characterization tests, and API extraction. Legacy Modernization HzMinds Engineering Team Mon, 17 Aug 2026 00:00:00 +0000 When Should You Rewrite a Legacy Application—and When Should You Not? https://www.hzminds.com/engineering/when-to-rewrite-a-legacy-application-and-when-not-to/ https://www.hzminds.com/engineering/when-to-rewrite-a-legacy-application-and-when-not-to/ A practical engineering framework for deciding between a full rewrite, incremental modernization, or leaving a legacy system alone—with the trade-offs each path actually involves. Architecture HzMinds Engineering Team Mon, 10 Aug 2026 00:00:00 +0000