Notes on running production infrastructure — Kubernetes, data platforms, messaging, the databases underneath — and DevClusterAI, a small studio building a small number of products and keeping them running.https://timderzhavets.com/en-ushttps://timderzhavets.com/blog/rds-proxy-in-production-solving-connection-exhaustion/https://timderzhavets.com/blog/rds-proxy-in-production-solving-connection-exhaustion/Eliminate Lambda connection storms and achieve 30-second database failover with RDS Proxy. Production deployment guide with Terraform and monitoring.Sat, 07 Mar 2026 00:00:00 GMTRDSAWSLambdaPostgreSQLhttps://timderzhavets.com/blog/java-vs-python-in-production-performance-concurrency/https://timderzhavets.com/blog/java-vs-python-in-production-performance-concurrency/Real performance differences between Java and Python in production: concurrency models, GC behavior, and when type safety prevents 2 AM incidents.Fri, 06 Mar 2026 00:00:00 GMTPythonJava/TypeScripthttps://timderzhavets.com/blog/docker-images-vs-helm-charts-choosing-the-right/https://timderzhavets.com/blog/docker-images-vs-helm-charts-choosing-the-right/Docker and Helm solve different problems—images package applications, charts orchestrate deployments. Learn when you need each.Thu, 05 Mar 2026 00:00:00 GMTKubernetesHelmhttps://timderzhavets.com/blog/building-distributed-state-stores-with-nats-jetstream/https://timderzhavets.com/blog/building-distributed-state-stores-with-nats-jetstream/Replace Redis and S3 with NATS JetStream's built-in KV and Object stores for simplified cloud-native state management.Wed, 04 Mar 2026 00:00:00 GMTNode.jsPostgreSQLRedisS3Kuberneteshttps://timderzhavets.com/blog/building-a-cost-efficient-gitlab-runner-fleet-from/https://timderzhavets.com/blog/building-a-cost-efficient-gitlab-runner-fleet-from/Evolve GitLab Runners from basic setup to production-grade auto-scaling with real cost analysis, executor trade-offs, and fleet management.Tue, 03 Mar 2026 00:00:00 GMTKubernetesAWSLinuxMonitoringhttps://timderzhavets.com/blog/nats-vs-kafka-a-decision-framework-for-cloud-native/https://timderzhavets.com/blog/nats-vs-kafka-a-decision-framework-for-cloud-native/Operational trade-off analysis with runnable Go code showing where NATS and Kafka each break down under real cloud-native workload patterns.Mon, 02 Mar 2026 00:00:00 GMTKubernetesGoLanghttps://timderzhavets.com/blog/nats-jetstream-vs-kafka-choosing-the-right-persistent/https://timderzhavets.com/blog/nats-jetstream-vs-kafka-choosing-the-right-persistent/An architectural decision framework comparing JetStream and Kafka across operational complexity, cloud-native fit, and delivery guarantees.Sun, 01 Mar 2026 00:00:00 GMTKuberneteshttps://timderzhavets.com/blog/nats-jetstream-in-production-persistent-messaging/https://timderzhavets.com/blog/nats-jetstream-in-production-persistent-messaging/Migrate from ephemeral Core NATS to durable JetStream with production deployment patterns for cloud-native teams—without the Kafka overhead.Sat, 28 Feb 2026 00:00:00 GMTNetworkingKuberneteshttps://timderzhavets.com/blog/nats-jetstream-in-practice-persistent-messaging-and/https://timderzhavets.com/blog/nats-jetstream-in-practice-persistent-messaging-and/Build persistent, replay-capable messaging on NATS JetStream with durable consumers and production Kubernetes deployment via Helm.Fri, 27 Feb 2026 00:00:00 GMTKubernetesHelmhttps://timderzhavets.com/blog/grafana-loki-in-production-building-a-500-month/https://timderzhavets.com/blog/grafana-loki-in-production-building-a-500-month/Cut cloud logging costs by 85% with production-ready Loki architecture. Real deployment patterns for 100GB+ daily logs on Kubernetes.Thu, 26 Feb 2026 00:00:00 GMTKubernetesMonitoringLoggingAWSS3https://timderzhavets.com/blog/building-a-self-scaling-gitlab-runner-fleet-from-single/https://timderzhavets.com/blog/building-a-self-scaling-gitlab-runner-fleet-from-single/A practical guide to evolving GitLab Runner infrastructure from a single server to an autoscaling multi-executor fleet handling thousands of jobs daily.Wed, 25 Feb 2026 00:00:00 GMTKubernetesAWSLinuxAutomationhttps://timderzhavets.com/blog/building-production-ready-spark-on-kubernetes-with-the/https://timderzhavets.com/blog/building-production-ready-spark-on-kubernetes-with-the/Transform Spark workloads from imperative spark-submit chaos into declarative, GitOps-ready deployments with Kubernetes Operators and CRDs.Tue, 24 Feb 2026 00:00:00 GMTKubernetesHelmPythonhttps://timderzhavets.com/blog/building-a-production-grade-ecr-pipeline-for-eks/https://timderzhavets.com/blog/building-a-production-grade-ecr-pipeline-for-eks/Complete guide to designing secure, cost-effective ECR workflows for EKS with vulnerability scanning, lifecycle automation, and replication strategiesMon, 23 Feb 2026 00:00:00 GMTEKSAWSKubernetesSecurityhttps://timderzhavets.com/blog/zero-downtime-schema-changes-with-alembic-a-production/https://timderzhavets.com/blog/zero-downtime-schema-changes-with-alembic-a-production/Battle-tested strategies for safe database migrations: expand-contract patterns, lock management, and rollback techniques that work at scale.Sun, 22 Feb 2026 00:00:00 GMTPythonPostgreSQLhttps://timderzhavets.com/blog/spring-boot-auto-configuration-how-it-works-and-when-to/https://timderzhavets.com/blog/spring-boot-auto-configuration-how-it-works-and-when-to/Deep dive into Spring Boot's auto-configuration mechanism. Learn how it works, debug issues, and take control when defaults don't fit.Sat, 21 Feb 2026 00:00:00 GMTJava/TypeScriptMariaDBhttps://timderzhavets.com/blog/rancher-with-docker-building-a-container-management/https://timderzhavets.com/blog/rancher-with-docker-building-a-container-management/Build a unified container pipeline from local Docker development to production Kubernetes using Rancher Desktop and Rancher Server.Fri, 20 Feb 2026 00:00:00 GMTRancherKubernetesLinuxhttps://timderzhavets.com/blog/rancher-multi-cluster-management-from-zero-to/https://timderzhavets.com/blog/rancher-multi-cluster-management-from-zero-to/Deploy Rancher to unify Kubernetes cluster management across EKS, GKE, and bare metal with production-ready RBAC, backups, and GitOps patterns.Thu, 19 Feb 2026 00:00:00 GMTRancherKubernetesEKSHelmLinuxhttps://timderzhavets.com/blog/migrating-from-terraform-to-opentofu-a-practical-guide/https://timderzhavets.com/blog/migrating-from-terraform-to-opentofu-a-practical-guide/A hands-on guide to migrating production workloads from Terraform to OpenTofu, covering state management, CI/CD updates, and provider compatibility.Wed, 18 Feb 2026 00:00:00 GMTLinuxAWSGitHub ActionsKuberneteshttps://timderzhavets.com/blog/clickup-custom-kanban-migration/https://timderzhavets.com/blog/clickup-custom-kanban-migration/Migrate from ClickUp to a custom kanban system with full AI integration, covering data export, schema design, and MCP server implementation for Claude Code workflows.Tue, 17 Feb 2026 00:00:00 GMTAutomationPostgreSQLPythonNode.jshttps://timderzhavets.com/blog/kubectl-command-patterns-that-senior-engineers-actually/https://timderzhavets.com/blog/kubectl-command-patterns-that-senior-engineers-actually/Master the kubectl workflows and muscle-memory commands that experienced engineers rely on for daily cluster operations, debugging, and incident response.Mon, 16 Feb 2026 00:00:00 GMTKubernetesLinuxMonitoringhttps://timderzhavets.com/blog/goroutines-vs-async-await-a-performance-deep-dive-for/https://timderzhavets.com/blog/goroutines-vs-async-await-a-performance-deep-dive-for/Compare Go's goroutines with .NET's async/await through real benchmarks, production case studies, and migration strategies for high-concurrency systems.Sun, 15 Feb 2026 00:00:00 GMTGoLang.NETKubernetesMonitoringhttps://timderzhavets.com/blog/gitlab-with-rancher-building-a-production-ready-gitops/https://timderzhavets.com/blog/gitlab-with-rancher-building-a-production-ready-gitops/Combine GitLab Agent and Rancher Fleet to manage deployments across multiple Kubernetes clusters with unified observability and drift detection.Sat, 14 Feb 2026 00:00:00 GMTRancherArgoCDHelmKuberneteshttps://timderzhavets.com/blog/gitlab-ci-cd-with-rancher-building-a-pull-based/https://timderzhavets.com/blog/gitlab-ci-cd-with-rancher-building-a-pull-based/Implement pull-based GitOps deployments across multiple Kubernetes clusters using GitLab CI/CD, Rancher Fleet, and the GitLab Agent.Fri, 13 Feb 2026 00:00:00 GMTRancherArgoCDHelmGitHub Actionshttps://timderzhavets.com/blog/from-zero-to-production-aks-a-battle-tested-blueprint/https://timderzhavets.com/blog/from-zero-to-production-aks-a-battle-tested-blueprint/A production-ready AKS blueprint built from real failures: security hardening, cost optimization, and operational patterns for Azure Kubernetes.Thu, 12 Feb 2026 00:00:00 GMTKubernetesHelmArgoCDMonitoringSecurityhttps://timderzhavets.com/blog/fastapi-in-practice-building-high-performance-apis-2/https://timderzhavets.com/blog/fastapi-in-practice-building-high-performance-apis-2/Master async patterns and performance optimization for FastAPI apps serving high-traffic workloads in production.Wed, 11 Feb 2026 00:00:00 GMTPythonLambdahttps://timderzhavets.com/blog/ai-assisted-development-claude-code/https://timderzhavets.com/blog/ai-assisted-development-claude-code/Explore how Claude Code and Model Context Protocol (MCP) servers transform software development with AI-powered code generation, task management, and persistent memory.Tue, 10 Feb 2026 00:00:00 GMTClaude CodeMCPPythonAutomationhttps://timderzhavets.com/blog/from-airflow-frustration-to-dagster-assets-a-migration-2/https://timderzhavets.com/blog/from-airflow-frustration-to-dagster-assets-a-migration-2/Migrate from Airflow to Dagster with an asset-centric approach that transforms debugging and testing.Mon, 09 Feb 2026 00:00:00 GMTPythonhttps://timderzhavets.com/blog/eks-vs-gke-a-production-ready-decision-framework-for/https://timderzhavets.com/blog/eks-vs-gke-a-production-ready-decision-framework-for/A weighted scoring framework with Terraform examples for platform teams choosing between AWS EKS and Google GKE.Sun, 08 Feb 2026 00:00:00 GMTEKSGKEKubernetesAWSHelmhttps://timderzhavets.com/blog/eks-vs-gke-a-practical-guide-to-kubernetes-migration/https://timderzhavets.com/blog/eks-vs-gke-a-practical-guide-to-kubernetes-migration/A migration-focused comparison of EKS and GKE examining real switching costs and operational trade-offs for production Kubernetes workloads.Sat, 07 Feb 2026 00:00:00 GMTEKSGKEKubernetesHelmAWShttps://timderzhavets.com/blog/building-your-first-event-driven-pipeline-with-argo/https://timderzhavets.com/blog/building-your-first-event-driven-pipeline-with-argo/Learn to build Kubernetes-native event pipelines with Argo Events. Connect GitHub webhooks to automated workflows using EventSources, Sensors, and EventBus.Fri, 06 Feb 2026 00:00:00 GMTKubernetesArgoCDGitHub Actionshttps://timderzhavets.com/blog/building-a-production-ml-inference-stack-with-kserve/https://timderzhavets.com/blog/building-a-production-ml-inference-stack-with-kserve/Learn to deploy multi-cluster ML inference using KServe, vLLM, and Karmada for scalable, resilient model serving across regions.Thu, 05 Feb 2026 00:00:00 GMTKubernetesHelmArgoCDhttps://timderzhavets.com/blog/from-10ms-to-1ms-a-systematic-approach-to-grpc-latency/https://timderzhavets.com/blog/from-10ms-to-1ms-a-systematic-approach-to-grpc-latency/A systematic guide to identifying and eliminating gRPC latency bottlenecks with measurable benchmarks and production-tested configurations.Wed, 04 Feb 2026 00:00:00 GMTGoLangPythonKubernetesMonitoringhttps://timderzhavets.com/blog/neo4j-knowledge-graphs-documentation/https://timderzhavets.com/blog/neo4j-knowledge-graphs-documentation/Create living documentation using Neo4j knowledge graphs to map repository relationships, service dependencies, and API connections across complex codebases.Tue, 03 Feb 2026 00:00:00 GMTNeo4jPythonAutomationhttps://timderzhavets.com/blog/taming-callback-hell-practical-asyncio-patterns-for/https://timderzhavets.com/blog/taming-callback-hell-practical-asyncio-patterns-for/Production-ready asyncio patterns for debugging silent failures, structured concurrency, graceful shutdowns, and testing async Python code.Mon, 02 Feb 2026 00:00:00 GMTPythonMonitoringLogginghttps://timderzhavets.com/blog/sequential-thinking-mcp-problem-decomposition/https://timderzhavets.com/blog/sequential-thinking-mcp-problem-decomposition/Use the Sequential Thinking MCP server to break down complex problems into structured reasoning chains, enabling better debugging, architecture decisions, and research workflows.Tue, 27 Jan 2026 00:00:00 GMTMCPPythonClaude CodeAutomationhttps://timderzhavets.com/blog/infisical-secrets-management/https://timderzhavets.com/blog/infisical-secrets-management/Implement secure secrets management using Infisical, an open-source platform for managing API keys, database credentials, and environment variables across development and production.Tue, 20 Jan 2026 00:00:00 GMTInfisicalSecurityAutomationNode.jshttps://timderzhavets.com/blog/auth0-multi-app-authentication/https://timderzhavets.com/blog/auth0-multi-app-authentication/Design patterns for implementing Auth0 authentication across multiple frontend applications with shared backend services and role-based access control.Tue, 13 Jan 2026 00:00:00 GMTAuth0Node.jsJava/TypeScriptSecurityhttps://timderzhavets.com/blog/api-aggregation-patterns/https://timderzhavets.com/blog/api-aggregation-patterns/Master the art of aggregating data from multiple external APIs with proper error handling, rate limiting, caching, and response normalization strategies.Tue, 06 Jan 2026 00:00:00 GMTPythonAutomationNode.jshttps://timderzhavets.com/blog/supabase-image-storage-architecture/https://timderzhavets.com/blog/supabase-image-storage-architecture/Design scalable image storage solutions using Supabase Storage, with bucket organization, access policies, image transformations, and CDN optimization.Tue, 23 Dec 2025 00:00:00 GMTSupabasePostgreSQLNode.jsS3https://timderzhavets.com/blog/threejs-cad-web-viewer/https://timderzhavets.com/blog/threejs-cad-web-viewer/Build interactive web-based 3D CAD viewers using Three.js, supporting STL, glTF, and STEP formats with optimized performance for engineering models.Tue, 16 Dec 2025 00:00:00 GMTNode.jsJava/TypeScriptCadQueryhttps://timderzhavets.com/blog/prisma-vs-drizzle-orm-comparison/https://timderzhavets.com/blog/prisma-vs-drizzle-orm-comparison/A practical comparison of Prisma and Drizzle ORMs for TypeScript projects, covering schema design, query building, migrations, and performance trade-offs.Tue, 09 Dec 2025 00:00:00 GMTPrismaDrizzlePostgreSQLNode.jsJava/TypeScripthttps://timderzhavets.com/blog/neo4j-design-memory-cad/https://timderzhavets.com/blog/neo4j-design-memory-cad/Build persistent design memory for CAD projects using Neo4j graph database to track component relationships, design decisions, and constraints across sessions.Tue, 02 Dec 2025 00:00:00 GMTNeo4jPythonCadQueryhttps://timderzhavets.com/blog/redis-postgresql-migration-sessions/https://timderzhavets.com/blog/redis-postgresql-migration-sessions/Learn when and how to migrate session storage from Redis to PostgreSQL, reducing infrastructure complexity while maintaining performance for moderate-scale applications.Tue, 25 Nov 2025 00:00:00 GMTPostgreSQLRedisNode.jshttps://timderzhavets.com/blog/python-click-cli-cad-workflows/https://timderzhavets.com/blog/python-click-cli-cad-workflows/Create professional command-line interfaces for CAD automation using Python Click, with subcommands, rich output formatting, and shell completion.Tue, 18 Nov 2025 00:00:00 GMTPythonAutomationCadQueryhttps://timderzhavets.com/blog/equipment-categorization-canonical-mapping/https://timderzhavets.com/blog/equipment-categorization-canonical-mapping/Design robust equipment categorization systems using canonical name mapping, fuzzy matching, and hierarchical taxonomies for fitness applications.Tue, 11 Nov 2025 00:00:00 GMTPythonMachine LearningPostgreSQLhttps://timderzhavets.com/blog/partcad-package-manager-integration/https://timderzhavets.com/blog/partcad-package-manager-integration/Learn how to use PartCAD as a package manager for CAD components, accessing thousands of standardized parts like fasteners, motors, and electronics through a unified API.Tue, 04 Nov 2025 00:00:00 GMTPythonCadQueryPartCADOpen CASCADEhttps://timderzhavets.com/blog/fitness-program-adaptation-algorithms/https://timderzhavets.com/blog/fitness-program-adaptation-algorithms/Design adaptive fitness program algorithms that automatically adjust training variables based on user progress, implementing progressive overload and periodization strategies.Tue, 28 Oct 2025 00:00:00 GMTPythonTensorFlowMachine LearningPostgreSQLhttps://timderzhavets.com/blog/cq-electronics-component-adapters/https://timderzhavets.com/blog/cq-electronics-component-adapters/Build adapters for the cq_electronics library to integrate Raspberry Pi, connectors, and other electronic components into your parametric CAD workflow.Tue, 21 Oct 2025 00:00:00 GMTPythonCadQuerycq_electronicsBuild123dhttps://timderzhavets.com/blog/exercise-selection-algorithms-constraints/https://timderzhavets.com/blog/exercise-selection-algorithms-constraints/Build intelligent exercise selection systems that respect equipment availability, balance muscle group coverage, and personalize recommendations based on user goals and history.Tue, 14 Oct 2025 00:00:00 GMTPythonScikit-LearnMachine LearningPostgreSQLhttps://timderzhavets.com/blog/geometry-validation-parametric-cad/https://timderzhavets.com/blog/geometry-validation-parametric-cad/Implement robust geometry validation for parametric CAD models to ensure 3D printability, CNC compatibility, and assembly correctness using CadQuery and Open CASCADE.Tue, 07 Oct 2025 00:00:00 GMTPythonCadQueryOpen CASCADEhttps://timderzhavets.com/blog/muscle-activation-data-modeling/https://timderzhavets.com/blog/muscle-activation-data-modeling/Design database schemas and algorithms for tracking muscle activation patterns across exercises, enabling balanced workout recommendations and progress analysis.Tue, 30 Sep 2025 00:00:00 GMTPythonPostgreSQLTensorFlowMachine Learninghttps://timderzhavets.com/blog/cadquery-component-registry-python/https://timderzhavets.com/blog/cadquery-component-registry-python/Learn how to create a unified registry pattern to manage multiple CAD component sources in Python using CadQuery and PartCAD.Tue, 23 Sep 2025 00:00:00 GMTPythonCadQueryPartCADcq_warehouseAutomationhttps://timderzhavets.com/blog/exercise-database-data-normalization/https://timderzhavets.com/blog/exercise-database-data-normalization/Learn data engineering patterns for aggregating exercise data from multiple APIs and datasets, handling inconsistencies, and building a normalized fitness database.Tue, 16 Sep 2025 00:00:00 GMTPythonPostgreSQLMachine Learninghttps://timderzhavets.com/blog/cadquery_python_cad_ecosystem/https://timderzhavets.com/blog/cadquery_python_cad_ecosystem/Discover CadQuery, a Python framework for creating parametric 3D CAD models, and explore the rich ecosystem of editors, plugins, and tools built around it.Tue, 09 Sep 2025 00:00:00 GMTPythonCadQueryBuild123dOpen CASCADEAutomationhttps://timderzhavets.com/blog/hybrid_kubernetes_setup_detailed_explained/https://timderzhavets.com/blog/hybrid_kubernetes_setup_detailed_explained/A detailed guide to creating a hybrid Kubernetes cluster, incorporating script content and explaining each step in depth.Mon, 21 Oct 2024 00:00:00 GMTKubernetesCalicoWindowsLinuxAutomationNetworking