96 lines
3.1 KiB
Markdown
96 lines
3.1 KiB
Markdown
# Cross-Cutting Concerns Management - Reference
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This reference documentation provides comprehensive details on the cross-cutting concerns standardization methodology developed in bootstrap-013.
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## Core Methodology
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**Systematic standardization of**: Error handling, Logging, Configuration
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**Three Phases**:
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1. Observe (Pattern inventory, baseline metrics, gap analysis)
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2. Codify (Convention selection, infrastructure creation, linter development)
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3. Automate (Standardization, CI integration, documentation)
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## Five Universal Principles
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1. **Detect Before Standardize**: Automate identification of non-compliant code
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2. **Prioritize by Value**: High-value files first (ROI-based classification)
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3. **Infrastructure Enables Scale**: Build sentinels before standardizing call sites
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4. **Context Is King**: Enrich errors with operation + resource + type + guidance
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5. **Automate Enforcement**: CI blocks non-compliant code
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## Knowledge Artifacts
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All knowledge artifacts from bootstrap-013 are documented in:
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`experiments/bootstrap-013-cross-cutting-concerns/knowledge/`
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**Best Practices** (3):
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- Go Logging (13 practices)
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- Go Error Handling (13 practices)
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- Go Configuration (14 practices)
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**Templates** (3):
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- Logger Setup (log/slog initialization)
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- Error Handling Template (sentinel errors, wrapping, context)
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- Config Management Template (centralized config, validation)
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## File Tier Prioritization
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**Tier 1 (ROI > 10x)**: User-facing APIs, public interfaces, error infrastructure
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- **Strategy**: Standardize 100%
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- **Example**: capabilities.go (16.7x ROI, 25.5% value gain)
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**Tier 2 (ROI 5-10x)**: Internal services, CLI commands, data processors
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- **Strategy**: Selective standardization 50-80%
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- **Example**: Internal utilities (8.3x ROI, 6% value gain)
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**Tier 3 (ROI < 5x)**: Test utilities, stubs, deprecated code
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- **Strategy**: Defer or skip 0-20%
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- **Example**: Stubs (3x ROI, 1% value gain) - deferred
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## Effectiveness Validation
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**Error Diagnosis Speed**: 60-75% faster with rich context
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**ROI by Tier**:
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- Tier 1: 16.7x ROI
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- Tier 2: 8.3x ROI
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- Tier 3: 3x ROI (deferred)
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**CI Enforcement**:
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- Setup time: 20 minutes
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- Regression rate: 0%
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- Ongoing maintenance: 0 hours (fully automated)
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## Transferability
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**Overall**: 80-90% transferable across languages
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**Language-Specific Adaptations**:
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- Go: 90% (log/slog, fmt.Errorf %w, os.Getenv)
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- Python: 80-85% (logging, raise...from, os.environ)
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- JavaScript: 75-80% (winston, Error.cause, process.env)
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- Rust: 85-90% (tracing, anyhow, thiserror)
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**Universal Components** (100%):
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- 5 universal principles
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- File tier prioritization framework
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- ROI calculation method
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- Context enrichment structure (operation + resource + type + guidance)
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**Language-Specific** (10-20%):
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- Specific libraries/tools
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- Syntax variations
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- Error wrapping mechanisms
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## Experiment Results
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See full results: `experiments/bootstrap-013-cross-cutting-concerns/` (in progress)
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**Key Metrics**:
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- Error handling: 70% → 90% consistency (Tier 1)
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- Logging: 0.7% → 90% adoption
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- Configuration: 40% → 80% centralized
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- ROI: 16.7x for Tier 1, 8.3x for Tier 2
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- Diagnosis speed: 60-75% improvement
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