Observability
Artifact-Boundary Productization: Clean OSS/Commercial Separation
The execution boundary determines everything: features that need the system alive belong in the platform (OSS). Features that analyze artifacts after shutdown become the product (commercial). A framework for clean OSS/commercial separation.
Rust Error Handling: thiserror, anyhow, and error-envelope
Three Rust error handling crates that seem to overlap but fill distinct roles. Learn when to use thiserror for typed errors, anyhow for application code, and error-envelope for HTTP boundaries.