A technically detailed guide to building a backup strategy you can trust — covering the 3-2-1-1-0 rule, full/incremental/differential backups, RTO and RPO targets, Restic with Backblaze B2, rclone for multi-cloud redundancy, production-ready automation scripts, healthcheck monitoring, and the restore testing discipline that turns a backup into a guarantee.
DevOps
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Backup Strategy in Practice: Restic, Backblaze B2, rclone, and Actually Testing Restores -
CI/CD Pipelines in 2026: The Merge Gate, the Deploy Strategy, and the Supply Chain CI and CD are two different disciplines wearing one acronym. A practical guide to the merge gate that keeps main shippable, a real GitHub Actions pipeline with OIDC and caching, the deployment strategies that make releases boring, and the supply-chain gates that stop a poisoned build.
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Container Security in 2026: The Threat Model, the Supply Chain, and a Pod That Can't Hurt You Containers share a kernel, so a container is not a security boundary by default. This is the practical hardening that makes one act like a boundary — minimal pinned images, a signed and scanned supply chain, dropped capabilities and seccomp, and a Kubernetes securityContext that actually holds.
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Infrastructure as Code in 2026: Terraform, OpenTofu, and the State You Have to Manage The foundational guide to infrastructure as code in 2026 — the declarative model and why the state file is the hard part, the Terraform BUSL license change and the OpenTofu fork, real configuration and workflow, remote state and locking after the DynamoDB era, modules, the broader landscape from Pulumi to Crossplane, and the failure modes nobody warns you about.
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Terraform vs OpenTofu vs Pulumi in 2026 A three-way comparison of the infrastructure-as-code tools that actually matter in 2026: the Terraform/OpenTofu fork that split one tool into two, and Pulumi's bet that real programming languages beat a config DSL. The architectural differences honestly, the state story, where each genuinely wins, and what is worth migrating.
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Modern Logging Architecture: Loki, Splunk, Elasticsearch, ClickHouse, and the Cost-Per-GB That Decides Everything At small scale any log store works; at scale the invoice decides, not the feature list. The four dominant logging backends make fundamentally different storage bets that fix their cost-per-GB and what queries are even fast. A deep dive on the index-everything camp versus the cheap-storage camp, and the ingest discipline that beats all of them.
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NGINX Unit: The Application Server Nobody Talks About A deep-dive into NGINX Unit — the language-agnostic application server with a REST API-driven configuration model that eliminates uWSGI, Gunicorn, and separate process managers. Covers architecture, live config reloads, Python/PHP/Go/Node/Java setup, TLS, routing, Docker, and Kubernetes, plus an honest assessment of its archived status and when it still makes sense to use.
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SLO-as-Code with Sloth and Pyrra: Multi-Window Burn-Rate Alerts, Error Budget Policy, and Grafana Dashboards A deep-dive into SLO-as-code workflows using Sloth v0.16 and Pyrra v0.10: complete YAML specs, generated PrometheusRules, multi-window multi-burn-rate alerting math, Grafana integration, and the organizational error budget policy conversation.
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AWS EKS Deep Dive: Managed Kubernetes on AWS A comprehensive technical guide to Amazon EKS covering node groups vs Fargate vs Karpenter, IRSA, Pod Identity, add-ons lifecycle, networking choices, cluster upgrades with zero downtime, EKS Anywhere, and cost optimization.
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LocalStack: AWS Development Without the Cloud Bill A deep technical guide to LocalStack 2026 — running 110+ AWS services locally, integrating with Terraform, CDK, and CI pipelines, understanding the fidelity gaps that matter, and the major structural changes that ended the free community edition.
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Apache Pulsar vs Kafka: Architecture, Trade-offs, and When to Choose Each Architecture differences, subscription models, multi-tenancy, geo-replication, tiered storage, schema registry, and an honest decision framework for choosing between Kafka and Pulsar in 2026.
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AWS CDK Deep Dive Construct levels L1/L2/L3, stacks and environments, custom constructs, CDK Pipelines, escape hatches, testing, and an honest CDK vs Terraform comparison.
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AWS EventBridge in Depth Event buses, schema discovery, archives and replay, Pipes for point-to-point integration, Scheduler for replacing cron jobs, cross-account routing, and real-world patterns including the saga.
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AWS IAM: Permission Boundaries, SCPs, and Least Privilege at Scale IAM policy evaluation logic, permission boundaries, Service Control Policies, IAM Access Analyzer, ABAC with tags, and the common misconfigurations that lead to privilege escalation.
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AWS Networking Deep Dive: VPCs, Transit Gateway, and PrivateLink A practical guide to AWS network design: CIDR planning that won't strand you later, subnet layout by tier and AZ, security groups vs NACLs, VPC peering vs Transit Gateway vs PrivateLink decision framework, NAT Gateway patterns, and Route 53 Resolver for private DNS and hybrid environments.
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AWS Systems Manager: Beyond Parameter Store Session Manager for SSH-free access, Run Command for fleet operations, Patch Manager, Automation runbooks, State Manager for configuration drift, and the full no-bastion-host architecture.
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Cloud Cost Engineering: FinOps Without the Buzzwords A practical guide to cloud cost engineering: commitment discounts (Savings Plans vs Reserved Instances vs Spot), tagging governance for real cost allocation, rightsizing with Compute Optimizer, hunting idle and zombie resources, data transfer costs that hide in plain sight, storage tier optimization, and the organizational work that matters more than any tool.
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Cloud Database Trade-offs: RDS vs Aurora vs DynamoDB vs ElastiCache When to use RDS, Aurora, Aurora Serverless v2, DynamoDB, and ElastiCache. Connection pooling with RDS Proxy, single-table DynamoDB design, partition hotspots, Valkey, and the cost math.
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Container Security in the Cloud: From Image to Runtime Supply chain hardening with Cosign and Syft, ECR scanning, Pod Security Standards, Falco runtime detection, network policies, External Secrets Operator, and admission controllers.
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Crossplane: Kubernetes-Native Cloud Infrastructure Managed Resources, Composite Resources, Claims, XRDs, and Compositions in depth. Provider auth, composition functions, ArgoCD integration, and an honest comparison with Terraform.
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etcd: The Brain of Kubernetes What lives in etcd, Raft consensus and quorum, backup and restore with etcdctl/etcdutl, compaction and defragmentation, the NOSPACE alarm, sizing guidelines, and the disaster recovery playbook.
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HashiCorp Packer: Golden AMIs and Immutable Infrastructure HCL2 build templates, multi-builder parallelism, provisioners, post-processors, HCP Packer lineage tracking, and building a production AMI pipeline in GitHub Actions.
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Karpenter: Kubernetes Node Autoscaling Done Right A practical guide to Karpenter: how it differs from cluster-autoscaler, NodePool and EC2NodeClass configuration, Spot instance handling with automatic fallback, consolidation and disruption budgets, weighted NodePools for multi-tier workloads, GPU node provisioning, drift detection, and the operational patterns that reduce your EC2 bill.
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Kubernetes Debugging in Production A systematic approach to CrashLoopBackOff, OOMKilled, Pending pods, DNS failures, network policy blocks, and certificate errors — with the exact commands to run at each stage.
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Multi-Region Active-Active: What It Actually Takes Latency routing, conflict resolution, DynamoDB Global Tables, Aurora Global Database, RTO/RPO math, and why most teams shouldn't attempt full active-active.
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OpenSearch in Production Index lifecycle management, shard sizing decisions, dashboards, alerting, k-NN neural search, the OpenSearch vs Elasticsearch question in 2026, and running OpenSearch on Kubernetes.
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OpenTelemetry in Practice: Tracing, Metrics, and Logs Without Vendor Lock-In A practical guide to OpenTelemetry: instrumenting real services with the SDK, running the Collector as a telemetry pipeline, exporting traces to Grafana Tempo, metrics to Prometheus, logs to Loki, and understanding context propagation and baggage.
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PostgreSQL Full-Text Search vs Elasticsearch: Where the Line Actually Is tsvector/tsquery, pg_trgm fuzzy matching, ranking and highlighting, multilingual support, and an honest answer to when Postgres FTS is enough and when you actually need a dedicated search engine.
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Rust for Systems Engineers: A Practical Onramp Ownership and borrowing without the theory lecture, practical patterns for network services and CLI tools, safe interop with C, and an honest account of where Rust genuinely beats Go and where it does not.
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Serverless in Production: Lambda Patterns That Hold Up A practical guide to running AWS Lambda in production: the cold start problem and its real solutions, concurrency and throttling mechanics, event-driven fan-out with SQS and SNS, Step Functions for durable orchestration, API Gateway cost traps, container images vs layers, idempotency, and the patterns that break under load.
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Terraform at Scale: Modules, Remote State, and the Drift Problem A practical guide to running Terraform in production: S3 remote state with native locking, workspace vs directory-based environment separation, module versioning strategies, Terragrunt for DRY configuration, drift detection in CI, moved blocks for safe refactoring, and state surgery when things go sideways.
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AI Code Review Bots: Building One Engineers Don't Mute What separates a review bot engineers actually act on from one they silence on day three: context selection, taste calibration, blocking vs. advisory mode, and the metrics that tell you which you've built.
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eBPF for Observability: Writing Your First Program What eBPF actually is, how the verifier and JIT compiler work, bpftrace one-liners for immediate production insight, writing a real tracing program in C with libbpf, and the production tools built on top of it — Cilium, Pixie, and Parca.
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Nix and NixOS: Reproducible Infrastructure from the Ground Up Declarative system configuration, the Nix store, flakes, home-manager, and why 'it works on my machine' becomes irrelevant — along with an honest account of where Nix makes your life harder before it makes it better.
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Temporal and Workflow Orchestration: Durable Execution for Engineers Who've Been Burned What makes Temporal different from a job queue, how event history replay achieves durable execution, activities vs workflows with real code, retries that actually work, self-hosting on Kubernetes, and an honest comparison with Celery, Airflow, and Step Functions.
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Writing a Kubernetes Operator: The Complete Pattern Custom Resource Definitions, controllers, reconciliation loops, finalizers, status conditions, and building a real operator with controller-runtime that manages a stateful workload — with every pattern you need to do it right.
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.NET Framework 4.8 + IIS + SQL Server: A Modern Development and Deployment Workflow for Legacy Apps A practical, end-to-end guide to working productively on a .NET Framework 4.8 / IIS / SQL Server app in 2026 — workstation setup, isolated local development with Docker Windows containers, per-developer databases, web.config transforms, build pipelines, Web Deploy / Octopus deployment patterns, and the realistic modernization on-ramp.
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ArgoCD ApplicationSets Patterns How to stop hand-writing hundreds of near-identical ArgoCD Application manifests — list, cluster, and matrix generators plus templating strategies for managing many apps across many environments and clusters with GitOps.
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Consul Service Discovery and Service Mesh How HashiCorp Consul turns service discovery from static config into dynamic, health-aware runtime queries — its DNS and HTTP interfaces, health checking, and KV store — then grows into a full service mesh with mTLS between services.
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HashiCorp Nomad: A Simpler Kubernetes Alternative HashiCorp Nomad as a simpler alternative to Kubernetes — a single binary that schedules containers, VMs, and raw binaries — covering its model, where it beats Kubernetes on operational overhead, and where its smaller ecosystem costs you.
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OpenTofu vs Terraform: The Fork One Year In The Terraform and OpenTofu fork, one year on — what HashiCorp's BSL relicensing actually changed, how the two tools have diverged since, and how to decide which one to standardize on for the next decade.
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Nix Flakes: Reproducible Development Environments Done Right A deep dive into Nix Flakes — the standardized, lock-file-backed system that finally makes Nix reproducible end-to-end. Covers devShells, package builds, NixOS configs, Home Manager, flake composition, and real-world patterns for teams.
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SLOs in Practice: Beyond the Math Burn rate alerts, multi-window multi-burn-rate alerting, error budget policies, tools like Sloth and Pyrra, and the organizational challenges of getting teams to actually own their SLOs.
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Perses: The Open Dashboarding Standard Perses is a CNCF sandbox project that treats dashboards as code — versioned in Git, validated in CI, deployed as Kubernetes CRDs. Here's what it is, how it works, and when to use it.
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Port: The Internal Developer Portal That Works Out of the Box A deep dive into Port (getport.io) — the SaaS internal developer portal. Covers blueprints, software catalog, self-service actions, scorecards, the Ocean integration framework, and an honest comparison with Backstage.
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Pyroscope: Continuous Profiling in Production Pyroscope brings always-on profiling to production systems — flame graphs for CPU hotspots, memory leaks, and goroutine issues, correlated with your traces and metrics.
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Python for DevOps and Automation Scripting, automation, working with APIs, and the ecosystem tools every ops engineer should know. From core Python concepts to real-world automation scripts.
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Radius: Microsoft's Open-Source Application Platform for Cloud-Native Teams A comprehensive deep dive into Radius — the CNCF sandbox application platform that separates developer concerns from infrastructure concerns. Covers the application model, Recipes, Environments, Connections, the rad CLI, architecture, and how it compares to Crossplane, Score, and Humanitec.
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Score: Developer-Centric Workload Specification Score lets developers write a single score.yaml that deploys to Docker Compose locally and Kubernetes in production — without rewriting config for each environment.
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Alloy: The OpenTelemetry Collector from Grafana Grafana Alloy replaces Grafana Agent, Grafana Agent Flow, and promtail with a single programmable OpenTelemetry collector. Here's how it works, how to deploy it, and how to build real pipelines with it.
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OpenCost: Kubernetes Cost Attribution How to install and use OpenCost to break down Kubernetes spending by namespace, team, and workload — with Prometheus metrics, Grafana dashboards, and the allocation API.
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Argo CD and GitOps in Production: App of Apps, Rollouts, and Multi-Cluster Management A deep dive into Argo CD in production: the App of Apps pattern for managing entire clusters, progressive delivery with Argo Rollouts, RBAC for multi-team environments, multi-cluster management, and drift detection.
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Capacity Planning for Engineers: Forecasting Growth, Load Testing, and Avoiding Surprise Scaling Events A comprehensive guide to capacity planning—covering demand forecasting, bottleneck identification, load testing with k6, headroom targets, Kubernetes autoscaling, and building the muscle to never be surprised by traffic growth again.
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Chaos Engineering in Practice: Breaking Things on Purpose to Build Unbreakable Systems A comprehensive guide to chaos engineering—covering the steady-state hypothesis, designing safe experiments, running game days, using Chaos Monkey, Litmus Chaos, and k6, and building a chaos program that actually improves reliability.
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Chaos Engineering on a Budget: Building Resilience Without Breaking the Bank Run controlled failure experiments with Chaos Monkey, Pumba, and Litmus on a shoestring budget. Learn to design steady-state hypotheses, run game days, and build genuine confidence in your runbooks.
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Dagger: Portable CI/CD Pipelines That Run Everywhere Write CI/CD pipelines in Go, Python, or TypeScript that run identically on your laptop and in CI — no more YAML hell, no more 'works locally but fails in GitHub Actions'. A complete Dagger guide.
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Designing for Observability: Building Applications You Can Actually Debug A practical guide to designing applications that are easy to debug in production — structured logging with trace IDs, meaningful metrics, health endpoints, graceful degradation, and the patterns that separate systems you can reason about from ones you can only guess at.
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Internal Developer Platforms with Backstage: Building the Golden Path How to build an Internal Developer Platform with Spotify's Backstage: setting up the software catalog, scaffolding golden-path templates, publishing TechDocs, and wiring up plugins for a self-service developer experience.
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OpenTelemetry: One Instrumentation to Rule Them All A deep dive into OpenTelemetry: the data model for traces, metrics, and logs; auto-instrumentation for Go, Python, and Node.js; building a Collector pipeline; and exporting to Jaeger, Prometheus, and Loki.
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Production Readiness Reviews: A Framework for Shipping Services That Don't Break A comprehensive guide to production readiness reviews—covering the PRR process, checklists for reliability, observability, security, and operations, SLO requirements, runbook standards, and how to build a lightweight PRR culture that scales without becoming bureaucracy.
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Progressive Delivery: Safe Deployments with Feature Flags, Canaries, and Argo Rollouts A comprehensive guide to progressive delivery—covering the spectrum from feature flags and canary releases to blue-green deployments and traffic splitting with Argo Rollouts, with real-world patterns for reducing deployment risk to near zero.
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Renovate Bot Deep Dive: Automated Dependency Updates That Don't Drive You Crazy A comprehensive guide to Renovate Bot: configuration strategies, grouping updates intelligently, automerge rules, custom managers for non-standard files, and managing dependency updates across large numbers of repositories.
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Self-Hosted GitHub Actions Runners: Ephemeral, Scalable, and Cost-Effective CI A deep dive into self-hosted GitHub Actions runners: deploying ephemeral runners on Kubernetes with Actions Runner Controller, build caching strategies, security hardening, and a real cost comparison against GitHub-hosted runners.
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The On-Call Handbook: Rotations, Runbooks, and Recovering Without Burning Out A comprehensive guide to sustainable on-call—covering rotation design, escalation paths, writing runbooks that actually work, alert hygiene, incident management, postmortems, and protecting engineers from burnout.
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VictoriaMetrics: Prometheus at Scale How VictoriaMetrics handles Prometheus at scale — architecture deep dive, vminsert/vmselect/vmstorage clustering, MetricsQL extensions, remote_write migration, and achieving 10x better storage efficiency.
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Developer Portals with Backstage: Catalog, Scaffolding, TechDocs, and Plugins A practical guide to Backstage — setting up the software catalog, creating service templates for self-service scaffolding, writing TechDocs, building plugins, and deploying Backstage to Kubernetes.
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Distributed Tracing with Tempo and Grafana: From Zero to TraceQL A comprehensive guide to distributed tracing with Grafana Tempo—covering trace storage internals, TraceQL queries, correlating traces with logs and metrics, and production deployment patterns.
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eBPF for Observability A practical guide to using eBPF for deep observability — tracing system calls and kernel events with bpftrace, profiling applications with BCC tools, and building network visibility with Cilium.
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Ephemeral Environments: Preview Deployments, Branch Environments, and Testing in Isolation Ephemeral environments spin up a complete, isolated copy of your application for every branch or pull request — automatically. This guide covers the patterns, tooling, and trade-offs for building preview deployments that actually improve your development workflow.
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Incident Response Playbook A practical incident response playbook covering detection, triage, containment, eradication, recovery, and blameless postmortems — with templates, runbooks, and communication scripts you can adapt for your team.
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Internal Developer Platforms: Building the Golden Path A practical guide to designing and building an Internal Developer Platform — self-service infrastructure, service templates, environment management, and the abstractions that let product teams ship without becoming Kubernetes experts.
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OpenTelemetry in Practice: Instrumentation, the Collector, and Connecting to Your Observability Stack A hands-on guide to OpenTelemetry: auto-instrumentation and manual SDK usage across Python, Go, and Node.js; building a production Collector pipeline with processors and exporters; and wiring traces, metrics, and logs together in Grafana.
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Platform Engineering vs DevOps: What Changed and Why It Matters A clear-eyed look at what Platform Engineering actually is, how it differs from DevOps, why the shift happened, and how to build a platform team that developers actually want to use.
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SLOs and Error Budgets: The Engineering Discipline Behind Reliable Services A practical guide to defining Service Level Objectives, calculating error budgets, building multi-window burn rate alerts, and running SLO reviews that drive real reliability improvements.
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Alerting That Doesn't Burn You Out: Fighting Alert Fatigue and Building Sane On-Call Alert fatigue is quietly destroying on-call teams — learn how to audit and redesign your alerting, write runbooks that actually help, configure Alertmanager intelligently, and build an on-call rotation that engineers don't dread.
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Disaster Recovery Planning: RTO, RPO, Runbooks, and Actually Testing Your Backups A practical guide to building a real disaster recovery strategy — covering RTO/RPO targets, system tiering, backup strategies by data type, runbook templates, chaos engineering, and the restore testing discipline that separates real DR plans from false confidence.
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Loki for Log Aggregation: Ship, Query, and Correlate Your Logs A complete technical guide to Grafana Loki — covering architecture, log shipping with Promtail and Alloy, LogQL queries, Grafana integration, alerting rules, and label strategy for homelabbers and DevOps engineers adding logs to their observability stack.
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The Art of the Postmortem: Blameless Incident Reviews That Actually Change Things Most postmortems get filed and forgotten, while the same incidents keep recurring. This guide covers the philosophy of blameless reviews, the anatomy of a great postmortem, and the cultural practices that turn incident documents into real systemic change.
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The Prometheus + Grafana Stack: Metrics, Alerting, and Dashboards A deep technical guide to building production-grade observability with Prometheus and Grafana — covering metrics collection, PromQL queries, alerting rules, Alertmanager routing, and dashboard construction for homelabbers and DevOps engineers.
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Uptime Kuma: Self-Hosted Status Pages and Alerting Done Right A practical guide to Uptime Kuma — the self-hosted uptime monitoring tool with a beautiful UI, 90+ notification integrations, and built-in status pages that replaces UptimeRobot, StatusCake, and Pingdom for homelabbers and DevOps engineers.
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Microsoft Azure as a Personal VPS: The Complete Guide to Pricing, Setup, and Cost Optimization Everything you need to know about running a personal VPS on Microsoft Azure — VM tiers, pricing models, security hardening, and battle-tested strategies to cut your cloud bill by up to 90%.
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Monitoring and Observability: From the Golden Signals to a Complete Self-Hosted Stack What to measure and why — RED, USE, the Four Golden Signals, percentiles, and error budgets — then a production-grade, self-hosted stack built on Prometheus, Grafana, Loki, and Alertmanager. Full Docker Compose, configs, alert rules, dashboards, and integration tips for any VPS or homelab.
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Docker Best Practices for Local Development Container optimization, volume mounts, multi-stage builds, and common pitfalls to avoid.
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Writing Shell Scripts That Don't Break Error handling, shellcheck, POSIX compatibility, and testing strategies for robust scripts.
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Kubernetes Basics: Getting Started with Container Orchestration Learn the fundamental concepts of Kubernetes and how to deploy your first application.
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Effective Log Management Strategies Logs are cheap to produce and expensive to keep, and most teams get the economics backwards. A practical guide to log management as a discipline: structured logging, log levels that mean something, the cost-and-cardinality model, what to sample or drop before ingest, retention and tiering, PII redaction, and how logs fit alongside metrics and traces.