OpenTelemetry is the vendor-neutral standard for distributed tracing. Learn the OTel data model, auto-instrumentation, Collector pipelines, tail-based sampling, and how to choose between Jaeger, Tempo, Honeycomb, and Datadog.
Deploy Prometheus and Grafana on Kubernetes using Helm. Learn the pull-based scrape model, PromQL essentials (rate, histogram_quantile, aggregation), Grafana dashboard design, recording rules, and Alertmanager routing.
A practical guide to monitoring LLM applications in production -- input/output logging, cost tracking, quality metrics, and a comparison of LangSmith, Langfuse, and Arize.
End-to-end guide to deploying ML models -- from ONNX export and FastAPI serving to Kubernetes GPU workloads, canary deployments, and Prometheus monitoring.
A practical guide to choosing between prompt engineering and fine-tuning for LLMs -- techniques, costs, LoRA/QLoRA, and a decision framework for production systems.
A practical guide to vector databases -- how embeddings and ANN algorithms work, and an honest comparison of Pinecone, Weaviate, Qdrant, and pgvector.
A practical guide to building Retrieval-Augmented Generation pipelines -- from document chunking and embedding to hybrid retrieval and evaluation metrics.
Write reliable bash scripts with set -euo pipefail, proper quoting, [[ ]] tests, idempotent patterns, cleanup traps, ShellCheck, and knowing when to switch to Python.
Trace a packet through the entire Linux networking stack: socket buffers, the TCP state machine, IP routing, netfilter/iptables, traffic control, and NIC drivers with practical diagnostic tools.
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