Common Code Review Checklist

SOP-ENG-CR-042: Technical Peer Review Protocol

1. Document Control Block

• Document ID: SOP-ENG-CR-042
• Effective Date: 2023-10-27
• Version: 2.1.0
• Review Cadence: Quarterly
• Target Audience: Software Engineering, Quality Assurance, DevOps, Site Reliability Engineering (SRE)

2. Executive Summary & Scope

This document defines the mandatory protocol for conducting code reviews within Template Registry. The scope encompasses all modifications to the production-ready codebase, including feature branches, hotfixes, and refactoring efforts. This SOP ensures alignment with SOC2 compliance standards, mitigation of technical debt, and adherence to security-first architecture principles.

3. Prerequisites & Tool Requirements

• Hardware: Standard issued developer workstation with TPM 2.0.
• Software: Access to Authorized Version Control System (GitHub Enterprise), CI/CD pipeline (Jenkins/GitHub Actions), and Static Analysis Security Testing (SAST) tools (SonarQube/Snyk).
• Certification: Peer Review Authorization (PRA) clearance required for all designated 'Reviewers'.
• Documentation: Access to the Project Architecture Repository and Security Threat Model.

4. Roles & Responsibilities (RACI Matrix)

5. Step-by-Step Operational Procedure

Phase I: Pre-Review Validation (Author)

• Ensure CI pipeline status is 'Green' (All automated tests passed).
• Verify coverage thresholds meet the 85% minimum baseline.
• Confirm adherence to language-specific style guides (Linting).
• Strip debug statements, hardcoded credentials, and temporary logs.

Phase II: Structural & Logical Review (Lead Reviewer)

• Evaluate architectural alignment: Does the change violate Domain-Driven Design (DDD) principles?
• Assess complexity: Verify cyclomatic complexity remains within maintainable limits.
• Identify side effects: Review impact on existing public APIs and database schemas.
• Validate error handling: Confirm appropriate try-catch blocks and logging levels.

Phase III: Security & Compliance (Security Architect/Lead)

• Perform manual inspection for OWASP Top 10 vulnerabilities (SQLi, XSS, CSRF).
• Verify sensitive data masking/encryption in transit and at rest.
• Confirm dependency updates do not introduce known CVEs.

6. Quality Assurance & Verification Criteria

• Performance Delta: Throughput and latency must not deviate >3% from baseline.
• Acceptance Benchmark: 100% resolution of 'Blocker' and 'Critical' level comments.
• Audit Trail: All reviews must include at least one 'Approve' signal from a designated reviewer in the repository manager.
• Tolerance: Zero tolerance for un-sanitized user input in production-facing modules.

7. Practical Troubleshooting Scenarios

Scenario A: Reviewer Disagreement

• Failure: Author and Reviewer remain at an impasse regarding implementation style.
• Corrective Action: Escalate to the assigned Tech Lead. If unresolved within 4 business hours, an architectural review session must be scheduled with the Chief Operations Architect.

Scenario B: CI Pipeline Flakiness

• Failure: Build fails sporadically due to infrastructure instability rather than code defects.
• Corrective Action: Isolate the flakiness via logs. If confirmed as infra-related, bypass CI with written sign-off from the SRE lead. Document incident in the CI Stability Tracker for subsequent remediation.

Scenario C: Unforeseen Production Regression

• Failure: Code passes review but causes a degradation in production performance.
• Corrective Action: Immediate revert to previous 'Known-Good' deployment. Initiate a Post-Mortem analysis to determine why the test suite failed to capture the regression.

Approved By: Julian Vance Chief Operations Architect, Template Registry