Tag: #observability
Writing on GPUs, LLMs, MLOps, Kubernetes — and mindset · 113 posts
Distributed Tracing & OpenTelemetry 2026 — OTel / Jaeger / Tempo / Zipkin / Honeycomb / Lightstep / SigNoz / SkyWalking / Datadog APM Deep Dive ♪ Listenable
In 2026, distributed tracing has converged on OpenTelemetry. The OTel spec and Collector, W3C Trace Context and B3 Propagation, OSS backends like Jaeger/Tempo/Zipkin, the observability 2.0 camp (Honeycomb, SigNoz), APM g
2026-05-16 · 21 min read #observability#distributed-tracing#opentelemetry#otelcol#jaegerError Tracking & Monitoring 2026 — Sentry / Bugsnag / Honeybadger / GlitchTip / Highlight / LogRocket / Hyperdx Deep Dive
The full 2026 error tracking and monitoring map in one place — Sentry as the de-facto leader that absorbed Codecov in 2024 and shipped AI grouping plus Replay by default, Bugsnag now under SmartBear focused on enterprise
2026-05-16 · 18 min read #error-tracking#monitoring#sentry#bugsnag#honeybadgereBPF Observability 2026 — Pixie / Parca / Cilium Hubble / Tetragon / Beyla / Coroot / Falco Deep Dive ♪ Listenable
A complete map of the eBPF ecosystem as of 2026. Compares Pixie, Parca, Cilium Hubble, Tetragon, BCC/bpftrace, OpenTelemetry eBPF Collector, Grafana Beyla, Coroot, Inspektor Gadget, Kepler and Falco — plus the CO-RE revo
2026-05-15 · 24 min read #ebpf#observability#pixie#parca#ciliumOpenTelemetry 2026 Deep Dive — OTLP, Semantic Conventions, the Collector Pipeline, and Auto-Instrumentation After the Standardization War ♪ Listenable
OpenTelemetry is no longer 'one of the competing options.' As of May 2026, OTLP is the single wire protocol every major observability vendor accepts, and HTTP / relational DB / messaging semantic conventions v1 are locke
2026-05-14 · 23 min read #opentelemetry#observability#traces#metrics#logsSystematic Debugging — Finding Bugs by Reasoning, Not Guessing ♪ Listenable
Most debugging is undisciplined guessing. The core loop — reproduce, isolate, hypothesize, test, fix, verify — plus git bisect and binary search, how to read stack traces properly, the hard bug classes like heisenbugs an
2026-05-14 · 23 min read #debugging#methodology#engineering-craft#git-bisect#observabilityOSS Monitoring Stack 2026 Deep Dive — Replacing Datadog with SigNoz, Coroot, OpenObserve, Sentry, Grafana, Uptrace ♪ Listenable
Companies whose Datadog bill crosses $120k per month are migrating to self-hosted OSS in droves. SigNoz delivers OpenTelemetry-native unified observability on ClickHouse, Coroot brings zero-instrumentation eBPF APM, Open
2026-05-14 · 20 min read #observability#monitoring#signoz#coroot#openobserveObservability 2025 Complete Guide: OpenTelemetry, Grafana / Datadog / Honeycomb / SigNoz, SLO and Error Budget, LLM Observability (2025)
Season 5 Ep 8. Without observability there is no operations, and without operations there is no product. Unifying the three OpenTelemetry signals (metric, log, trace), the Grafana stack (Prometheus, Loki, Tempo, Mimir) v
2026-04-15 · 11 min read #observability#opentelemetry#grafana#datadog#honeycombFrontend Monitoring & Error Tracking 2025 — Sentry, Datadog RUM, PostHog, LogRocket, Session Replay, Source Maps, AI Anomaly Detection (S6 E8)
The moment you deploy, every user screen becomes a black box. 2025 Sentry vs Datadog RUM vs PostHog vs LogRocket vs Bugsnag, source-map hygiene, the ethics of session replay, Core Web Vitals integration, AI-powered anoma
2026-04-15 · 7 min read #monitoring#error-tracking#sentry#datadog#posthogObservability Complete Guide — Metric, Log, Trace, OpenTelemetry, eBPF, SLO (Season 2 Ep 9, 2025)
"If you cannot observe it, you cannot operate it." Observability is the superset of logging and monitoring — the ability to infer unknown unknowns from system state alone. This post covers the Metric, Log, Trace three-pi
2026-04-15 · 11 min read #observability#opentelemetry#prometheus#grafana#lokiLLM Evaluation & Observability: Eval Harness, LLM-as-Judge, Tracing, Regression Prevention (2025)
Claiming a new model "seems better" is not science. The 1 failure mode of 2025 LLM products is "not measuring". Eval harness design, LLM-as-judge pitfalls and calibration, 3-layer observability (Trace/Span/Metric), produ
2026-04-15 · 11 min read #llm-eval#observability#llm-judge#distributed-tracing#langsmithAI Engineering in Practice — LLM API, RAG, Agents, LoRA/DPO, Vector DB, Evaluation, Observability, Prompt Injection (2025)
The real difficulty of production LLM API calls, why RAG is not simple lookup, agent patterns (ReAct, Plan-Execute, ReWOO), when to and when NOT to fine-tune (LoRA, QLoRA, DPO), a vector DB decision matrix, why LLM evalu
2026-04-15 · 7 min read #ai-engineering#llm#rag#ai-agent#loraeBPF Deep Dive — The VM, Verifier, XDP, and CO-RE That Made the Linux Kernel Programmable (2025)
Injecting safe code into the kernel — that is the eBPF revolution. This post dissects eBPF from internals to practice: the VM and bytecode, the Verifier that enforces safety, maps (Hash/Array/Ring Buffer/Perf), program t
2026-04-15 · 15 min read #ebpf#linux#kernel#xdp#observabilityeBPF Complete Guide — A Tiny VM Inside the Kernel: Verifier, JIT, CO-RE, Maps, Attach Points, XDP, LSM, sched_ext (2025) ♪ Listenable
Everything about eBPF — from cBPF in 1992 to eBPF in 2014 to schedext in 2024. The 11-register virtual machine ISA, the verifier's static analysis, JIT compilation, BTF and CO-RE, 17+ BPF map types, 200+ helper functions
2026-04-15 · 31 min read #linux#kernel#ebpf#bpf#xdpDistributed Tracing Complete Guide 2025: OpenTelemetry, Jaeger, Tempo, Span Analysis, Sampling Strategies
Everything about distributed tracing! Trace/Span/Context Propagation, OpenTelemetry SDK + Collector, Jaeger vs Tempo vs Zipkin, W3C Trace Context, sampling strategies (Head/Tail/Probabilistic), auto-instrumentation, cost
2026-04-15 · 10 min read #distributed-tracing#opentelemetry#jaeger#tempo#observabilityChaos Engineering Deep Dive — Netflix Simian Army, LitmusChaos/Chaos Mesh, AWS FIS, Game Day
Why Netflix started randomly killing production servers in 2010. From Chaos Monkey philosophy and the 4 principles, to the full Simian Army, LitmusChaos/Chaos Mesh/AWS FIS comparison, Game Day design, and blameless postm
2026-04-15 · 10 min read #chaos-engineering#sre#reliability#netflix#kubernetesAPI Gateway Complete Guide 2025: Kong, Envoy, AWS API Gateway, Auth/Rate Limiting/Monitoring ♪ Listenable
Everything about API Gateways! Kong vs Envoy vs AWS API Gateway vs Traefik comparison, routing, authentication (OAuth2/JWT/API Key), rate limiting (Token Bucket/Sliding Window), request transformation, caching, monitorin
2026-04-14 · 24 min read #api-gateway#kong#envoy#aws-api-gateway#rate-limitingeBPF Complete Guide 2025: Kernel Programming Revolution for Observability, Networking, Security
Everything about eBPF! Safe Linux kernel programming, BCC vs libbpf vs bpftrace, Cilium (networking), Falco (security), Pixie (observability), Tetragon, CO-RE, real-world tracing, performance optimization, production cas
2026-04-14 · 11 min read #ebpf#kernel#observability#networking#securityService Mesh Complete Guide 2025: Istio vs Linkerd, mTLS, Traffic Management, Observability ♪ Listenable
Everything about Service Mesh! Istio vs Linkerd comparison, Envoy sidecar proxy, mTLS automatic encryption, traffic management (canary/mirroring/circuit breaker), Observability (metrics/tracing/logging), Gateway API, Amb
2026-04-13 · 19 min read #service-mesh#istio#linkerd#mtls#traffic-managementWebSocket Real-Time Communication & Observability/Monitoring Complete Guide
From WebSocket/SSE/gRPC real-time communication principles to building observability with OpenTelemetry, Prometheus, and Grafana.
2026-04-12 · 13 min read #devops#websocket#realtime#observability#monitoringCloudflare AI Gateway Practical Guide: Observability, Reliability, and Cost Control for AI Traffic
A practical, current guide to Cloudflare AI Gateway as of April 12, 2026, covering observability, caching, retries, rate limiting, model fallback, and Dynamic Routing.
2026-04-12 · 5 min read #ai-platform#cloudflare#ai-gateway#observability#caching