Every entry compiles. Every config deploys.
20+ domains. Bare-metal embedded to LLM orchestration. Organized by domain, not difficulty — with failure modes documented alongside working solutions.
Organized by system boundary, not skill level
ESP32 · FreeRTOS · MQTT
PyTorch · TensorFlow · LangChain
Solidity · Bitcoin · Smart Contracts
Kafka · Docker · Kubernetes
Bare-metal configuration, RTOS task scheduling, and reliable broker communication patterns. 14 entries.
Model training pipelines, inference optimization, and LLM orchestration with reproducible configs. 18 entries.
Contract architecture, on-chain state management, and protocol integration with audited failure cases. 11 entries.
Stream topology, container orchestration, and fault-boundary design under real throughput constraints. 16 entries.
PydanticAI · LangChain · Vector DBs
FastAPI · Async Patterns
Grafana · Prometheus · Tracing
CI/CD · IaC · Cloud Networking
Agent loop design, retrieval pipeline construction, and embedding store integration with latency benchmarks. 9 entries.
High-throughput API design, FFI integration, and concurrency patterns tested under production load. 13 entries.
Dashboard composition, metric cardinality control, and distributed trace analysis across polyglot stacks. 8 entries.
Pipeline hardening, declarative infrastructure patterns, and network topology under multi-region constraints. 12 entries.
Dual-core task pinning under ISR pressure
Search, filter, read inline, or download
When the ISR fires at 40 kHz on core 0, the FreeRTOS scheduler on core 1 stalls. This entry documents the pinning fix, the queue depth that broke first, and the watchdog config that surfaced the real fault.
Tag filters narrow entries to exact intersection — not category approximations. Every filtered view returns entries where the code was verified to run.
Includes: annotated .c source, sdkconfig diff, oscilloscope capture description, and three documented failure modes with root-cause analysis.
Active tags: ESP32 · FreeRTOS · MQTT · PyTorch · Kafka · LangChain · Solidity · Kubernetes · RAG · PydanticAI · FastAPI · Rust · Grafana · Docker · Vector DB
The reference grows with every shipped system. Entries are added when the constraint is understood — not when the feature is announced.