Kunal Sinha — Blog https://kunalsinha.dev/blog Articles on cloud architecture, event-driven systems, microservices and engineering leadership. <![CDATA[AWS Transform Custom: I Modernized a Java 8 Spring Boot App to Java 21 — Here's What Actually Happened]]> https://kunalsinha.dev/blog/aws-transform-java-modernization https://kunalsinha.dev/blog/aws-transform-java-modernization Tue, 21 Jul 2026 00:00:00 GMT <![CDATA[AI Security Risks Every Engineering Leader Should Understand]]> https://kunalsinha.dev/blog/ai-security-risks-engineering-leaders https://kunalsinha.dev/blog/ai-security-risks-engineering-leaders Tue, 23 Jun 2026 00:00:00 GMT <![CDATA[AWS EventBridge Advanced Patterns: Building Enterprise Event-Driven Architectures]]> https://kunalsinha.dev/blog/aws-eventbridge-advanced-patterns https://kunalsinha.dev/blog/aws-eventbridge-advanced-patterns Tue, 19 May 2026 00:00:00 GMT <![CDATA[Distributed SQL and Microservices: An Alternative to Always Reaching for a Saga]]> https://kunalsinha.dev/blog/microservices-distributed-sql-transactions https://kunalsinha.dev/blog/microservices-distributed-sql-transactions Tue, 12 May 2026 00:00:00 GMT <![CDATA[Amazon Bedrock Guardrails: Enterprise AI Governance for Regulated Industries]]> https://kunalsinha.dev/blog/amazon-bedrock-guardrails https://kunalsinha.dev/blog/amazon-bedrock-guardrails Tue, 28 Apr 2026 00:00:00 GMT <![CDATA[Flatter Engineering Orgs and the IC Renaissance: What the Shift Away from Middle Management Actually Means]]> https://kunalsinha.dev/blog/leadership-flatter-orgs-ic-renaissance https://kunalsinha.dev/blog/leadership-flatter-orgs-ic-renaissance Tue, 21 Apr 2026 00:00:00 GMT <![CDATA[Amazon Q Developer Beyond Basics: Advanced Patterns for Enterprise Engineering Teams]]> https://kunalsinha.dev/blog/amazon-q-developer-advanced-patterns https://kunalsinha.dev/blog/amazon-q-developer-advanced-patterns Tue, 14 Apr 2026 00:00:00 GMT <![CDATA[AWS DevOps Agent: Your Always-On Autonomous On-Call Engineer]]> https://kunalsinha.dev/blog/aws-devops-agent https://kunalsinha.dev/blog/aws-devops-agent Tue, 31 Mar 2026 00:00:00 GMT <![CDATA[The Modular Monolith Comeback: Why Some Teams Are Walking Back Microservices in 2026]]> https://kunalsinha.dev/blog/microservices-modular-monolith-comeback https://kunalsinha.dev/blog/microservices-modular-monolith-comeback Tue, 10 Mar 2026 00:00:00 GMT <![CDATA[AWS MCP Server: Connecting AI Agents to Your AWS Environment]]> https://kunalsinha.dev/blog/aws-mcp-server https://kunalsinha.dev/blog/aws-mcp-server Tue, 24 Feb 2026 00:00:00 GMT <![CDATA[The Hidden Total Cost of AI Features (Beyond the Inference Bill)]]> https://kunalsinha.dev/blog/ai-hidden-total-cost-of-ai-features https://kunalsinha.dev/blog/ai-hidden-total-cost-of-ai-features Tue, 17 Feb 2026 00:00:00 GMT <![CDATA[Amazon Bedrock Knowledge Bases: Smart Parsing, Agentic Retrieval, and Why Enterprise RAG Is Finally Production-Ready]]> https://kunalsinha.dev/blog/bedrock-knowledge-bases-agentic-retrieval https://kunalsinha.dev/blog/bedrock-knowledge-bases-agentic-retrieval Tue, 10 Feb 2026 00:00:00 GMT <![CDATA[Reinforcement Fine-Tuning on Amazon Bedrock: 66% Accuracy Gains Without an ML Team]]> https://kunalsinha.dev/blog/bedrock-reinforcement-fine-tuning https://kunalsinha.dev/blog/bedrock-reinforcement-fine-tuning Tue, 27 Jan 2026 00:00:00 GMT <![CDATA[AWS Lambda Managed Instances: When Serverless Meets EC2 Economics]]> https://kunalsinha.dev/blog/aws-lambda-managed-instances https://kunalsinha.dev/blog/aws-lambda-managed-instances Tue, 13 Jan 2026 00:00:00 GMT <![CDATA[Amazon Nova Act: How AWS Is Making Browser Automation with AI Agents Actually Reliable]]> https://kunalsinha.dev/blog/amazon-nova-act https://kunalsinha.dev/blog/amazon-nova-act Thu, 18 Dec 2025 00:00:00 GMT <![CDATA[Managing Autonomous AI Agents as Part of Your Engineering Team]]> https://kunalsinha.dev/blog/leadership-managing-autonomous-ai-agents https://kunalsinha.dev/blog/leadership-managing-autonomous-ai-agents Mon, 15 Dec 2025 00:00:00 GMT <![CDATA[Amazon Bedrock AgentCore: How to Deploy Trusted AI Agents in Production on AWS]]> https://kunalsinha.dev/blog/amazon-bedrock-agentcore https://kunalsinha.dev/blog/amazon-bedrock-agentcore Mon, 08 Dec 2025 00:00:00 GMT <![CDATA[AI Agents as Microservices Consumers: Rethinking API Design When Your Caller Is an LLM]]> https://kunalsinha.dev/blog/microservices-ai-agents-as-consumers https://kunalsinha.dev/blog/microservices-ai-agents-as-consumers Mon, 24 Nov 2025 00:00:00 GMT <![CDATA[Cost Optimization Patterns for LLM Applications: Caching, Routing, and Cascades]]> https://kunalsinha.dev/blog/ai-cost-optimization-patterns-llm-applications https://kunalsinha.dev/blog/ai-cost-optimization-patterns-llm-applications Mon, 17 Nov 2025 00:00:00 GMT <![CDATA[Amazon S3 Vectors GA: Native Vector Storage in S3 and What It Means for Your RAG Architecture]]> https://kunalsinha.dev/blog/amazon-s3-vectors-ga https://kunalsinha.dev/blog/amazon-s3-vectors-ga Mon, 10 Nov 2025 00:00:00 GMT <![CDATA[Kubernetes Gateway API: Why It's Replacing Ingress for Microservices Routing]]> https://kunalsinha.dev/blog/microservices-kubernetes-gateway-api https://kunalsinha.dev/blog/microservices-kubernetes-gateway-api Tue, 28 Oct 2025 00:00:00 GMT <![CDATA[AsyncAPI and Schema Registries: Contract Testing for Event-Driven Microservices]]> https://kunalsinha.dev/blog/microservices-asyncapi-schema-registries https://kunalsinha.dev/blog/microservices-asyncapi-schema-registries Tue, 21 Oct 2025 00:00:00 GMT <![CDATA[The Saga Pattern in Practice: Distributed Transactions Without Distributed Locks]]> https://kunalsinha.dev/blog/microservices-saga-pattern-distributed-transactions https://kunalsinha.dev/blog/microservices-saga-pattern-distributed-transactions Thu, 16 Oct 2025 00:00:00 GMT <![CDATA[Multi-Runtime Microservices: What Dapr Actually Solves (and What It Doesn't)]]> https://kunalsinha.dev/blog/microservices-multi-runtime-dapr https://kunalsinha.dev/blog/microservices-multi-runtime-dapr Tue, 30 Sep 2025 00:00:00 GMT <![CDATA[AWS IAM Design Patterns for Enterprise: SCPs, Permission Boundaries, and Multi-Account Governance]]> https://kunalsinha.dev/blog/aws-iam-design-patterns-enterprise https://kunalsinha.dev/blog/aws-iam-design-patterns-enterprise Thu, 18 Sep 2025 00:00:00 GMT <![CDATA[Evaluating LLM-Powered Features: The Testing Problem Most Teams Haven't Solved]]> https://kunalsinha.dev/blog/ai-evaluating-llm-powered-features https://kunalsinha.dev/blog/ai-evaluating-llm-powered-features Tue, 09 Sep 2025 00:00:00 GMT <![CDATA[WebAssembly in Microservices Infrastructure: How Proxy-Wasm Is Replacing Native Sidecar Plugins]]> https://kunalsinha.dev/blog/microservices-webassembly-proxy-infrastructure https://kunalsinha.dev/blog/microservices-webassembly-proxy-infrastructure Wed, 27 Aug 2025 00:00:00 GMT <![CDATA[Building a Serverless Rules-Based Workflow on AWS: Step Functions, Lambda, DynamoDB, and SQS]]> https://kunalsinha.dev/blog/aws-serverless-rules-based-workflow https://kunalsinha.dev/blog/aws-serverless-rules-based-workflow Wed, 13 Aug 2025 00:00:00 GMT <![CDATA[The Junior Engineer Development Crisis: What Happens When AI Does the Easy Work First]]> https://kunalsinha.dev/blog/leadership-junior-engineer-development-crisis https://kunalsinha.dev/blog/leadership-junior-engineer-development-crisis Wed, 06 Aug 2025 00:00:00 GMT <![CDATA[Ambient Mesh: Why Sidecar-less Service Mesh Is Replacing the Sidecar Model]]> https://kunalsinha.dev/blog/microservices-ambient-mesh-sidecar-less https://kunalsinha.dev/blog/microservices-ambient-mesh-sidecar-less Wed, 30 Jul 2025 00:00:00 GMT <![CDATA[Chaos Engineering: Actually Proving Your Circuit Breakers Work]]> https://kunalsinha.dev/blog/microservices-chaos-engineering-maturity https://kunalsinha.dev/blog/microservices-chaos-engineering-maturity Wed, 23 Jul 2025 00:00:00 GMT <![CDATA[AWS CDK in Enterprise Delivery: Beyond the Basics]]> https://kunalsinha.dev/blog/aws-cdk-enterprise-patterns https://kunalsinha.dev/blog/aws-cdk-enterprise-patterns Wed, 16 Jul 2025 00:00:00 GMT <![CDATA[OpenTelemetry as the Unified Observability Standard for Microservices]]> https://kunalsinha.dev/blog/microservices-opentelemetry-unified-observability https://kunalsinha.dev/blog/microservices-opentelemetry-unified-observability Tue, 24 Jun 2025 00:00:00 GMT <![CDATA[API Gateway Patterns for Microservices: BFF, Aggregation, and When You Don't Need One]]> https://kunalsinha.dev/blog/microservices-api-gateway-patterns https://kunalsinha.dev/blog/microservices-api-gateway-patterns Wed, 11 Jun 2025 00:00:00 GMT <![CDATA[Platform Engineering and Internal Developer Platforms: The Real Answer to Microservices Sprawl]]> https://kunalsinha.dev/blog/microservices-platform-engineering-idp https://kunalsinha.dev/blog/microservices-platform-engineering-idp Wed, 28 May 2025 00:00:00 GMT <![CDATA[OpenFeature: Feature Flags as Standardized Infrastructure, Not a Vendor SDK]]> https://kunalsinha.dev/blog/microservices-openfeature-feature-flags https://kunalsinha.dev/blog/microservices-openfeature-feature-flags Wed, 21 May 2025 00:00:00 GMT <![CDATA[eBPF and the Future of Service Mesh Data Planes]]> https://kunalsinha.dev/blog/microservices-ebpf-service-mesh-future https://kunalsinha.dev/blog/microservices-ebpf-service-mesh-future Tue, 22 Apr 2025 00:00:00 GMT <![CDATA[Leading Engineering Teams Through AI-Assisted Development: What Actually Changes]]> https://kunalsinha.dev/blog/leadership-ai-assisted-development-teams https://kunalsinha.dev/blog/leadership-ai-assisted-development-teams Wed, 16 Apr 2025 00:00:00 GMT <![CDATA[Where Does One Microservice End and Another Begin? A Practical Guide to Service Boundaries]]> https://kunalsinha.dev/blog/microservices-service-boundaries-ddd https://kunalsinha.dev/blog/microservices-service-boundaries-ddd Wed, 09 Apr 2025 00:00:00 GMT <![CDATA[Zero Trust for Microservices: SPIFFE, SPIRE, and mTLS Everywhere]]> https://kunalsinha.dev/blog/microservices-zero-trust-spiffe-spire https://kunalsinha.dev/blog/microservices-zero-trust-spiffe-spire Wed, 26 Mar 2025 00:00:00 GMT <![CDATA[Prompt Engineering vs. Fine-Tuning vs. RAG: A Decision Framework]]> https://kunalsinha.dev/blog/ai-prompt-engineering-fine-tuning-rag-framework https://kunalsinha.dev/blog/ai-prompt-engineering-fine-tuning-rag-framework Wed, 19 Mar 2025 00:00:00 GMT <![CDATA[Build vs. Buy for AI Capabilities: A Framework for Engineering Leaders]]> https://kunalsinha.dev/blog/ai-build-vs-buy-framework https://kunalsinha.dev/blog/ai-build-vs-buy-framework Thu, 25 Jul 2024 00:00:00 GMT <![CDATA[GitOps and Progressive Delivery: Making Canary and Blue-Green Rollouts Declarative]]> https://kunalsinha.dev/blog/microservices-gitops-progressive-delivery https://kunalsinha.dev/blog/microservices-gitops-progressive-delivery Thu, 18 Jul 2024 00:00:00 GMT <![CDATA[RAG Architecture Patterns: From Naive Retrieval to Production-Grade Systems]]> https://kunalsinha.dev/blog/ai-rag-architecture-patterns https://kunalsinha.dev/blog/ai-rag-architecture-patterns Thu, 30 May 2024 00:00:00 GMT <![CDATA[Microservices Best Practices I Follow]]> https://kunalsinha.dev/blog/microservices-best-practices https://kunalsinha.dev/blog/microservices-best-practices Sat, 25 May 2024 00:00:00 GMT