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OpenTelemetry Part 1: Why Observability Matters
Observability answers the question monitoring cannot: why the system ended up in its current state. This post explains what observability is, how it differs from monitoring, and where OpenTelemetry came from and why it became the de facto standard — for full-stack developers who want a systematic understanding of the concepts and ecosystem.
OpenTelemetry Part 2: The Three Signals and Their Inner Workings
How traces, metrics, and logs are each produced and how they relate to each other is the core of understanding OpenTelemetry. This post covers spans and context propagation, metric aggregation and temporality, log correlation, and how the SDK and Collector divide the data path.
OpenTelemetry Part 3: The Ecosystem, Selection, and Rollout
An observability solution consists of three layers: production, collection, and analysis. This post covers OpenTelemetry
Skill Matrix
Languages
TypeScript · Python · Go
Frameworks
Next.js · shadcn · Tailwind · FastAPI
Infrastructure
Docker · K8s · AWS · 腾讯云 · MCP · A2A · Playwright · CI/CD · Git · OpenTelemetry
Data Layer
PostgreSQL · pgvector · Redis · Kafka · RabbitMQ · S3 · Prisma · SQLAlchemy · zod · Elasticsearch