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
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
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
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
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
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)
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
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
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