Streamlining Code Review Processes

Code review is essential for quality but often becomes a bottleneck. Reviews pile up, feedback is slow, and developers context-switch between coding and reviewing. Streamlining code review means faster turnaround, better feedback, and reviews that catch real issues rather than bikeshedding.

Review Problems

Faster Reviews

Smaller PRs

SMALL PR CULTURE
════════════════

WHY SIZE MATTERS:
─────────────────────────────────────
PR Lines    Review Time    Bug Detection
────────────────────────────────────────
< 100       15 min         High
100-400     30 min         Good
400-800     60 min         Medium
800+        Skim/skim      Low

ABOVE 400 LINES = SPLIT THE PR

HOW TO SPLIT:
─────────────────────────────────────
Feature work:
├── PR 1: Backend API
├── PR 2: Frontend component
├── PR 3: Integration + tests
└── Each independently reviewable

Refactoring:
├── PR 1: Extract function
├── PR 2: Use new function
├── PR 3: Remove old code
└── Each low-risk step

STACKED PRs:
─────────────────────────────────────
When work builds on work:
├── PR 1: Base changes (review first)
├── PR 2: Based on PR 1 (review after)
├── PR 3: Based on PR 2
└── Merge in order

Tools help:
├── GitHub draft PRs
├── Git stacking tools
└── GitScrum tracks dependencies

Review SLA

REVIEW SLA IMPLEMENTATION
═════════════════════════

SET EXPECTATIONS:
─────────────────────────────────────
Team SLA: First review within 24 hours

NOT: "Review when you have time"
NOT: "ASAP" (meaningless)

MONITORING:
─────────────────────────────────────
Track in GitScrum:
├── PR open time
├── Time to first review
├── Time to merge
├── Who's behind on reviews
└── Surface in standup

GITSCRUM INTEGRATION:
─────────────────────────────────────
Task workflow:
├── Status: Code Review
├── Assignee: Reviewer
├── Age visible
├── Alert if > 24h
└── Dashboard shows waiting reviews

TEAM PRACTICE:
─────────────────────────────────────
"Before starting new work,
check if you have reviews waiting."

Or: Batched review time
├── 10-11 AM: Review hour
├── Everyone reviews together
├── No context switching rest of day
└── PRs move quickly

Automated Checks

AUTOMATE WHAT YOU CAN
═════════════════════

CI PIPELINE CHECKS:
─────────────────────────────────────
Before human review:
├── Tests pass ✓
├── Lint passes ✓
├── Formatting correct ✓
├── Type checks pass ✓
├── Security scan clean ✓
├── Coverage maintained ✓
└── Build succeeds ✓

IF CI FAILS:
├── No human review yet
├── Author fixes first
├── Don't waste reviewer time
└── "CI green before review"

AUTOMATED FORMATTING:
─────────────────────────────────────
# Pre-commit hook
npm run format
npm run lint:fix
git commit

OR: Format on save in IDE
Result: Zero formatting discussions in reviews

AUTOMATED ASSIGNMENT:
─────────────────────────────────────
├── Round-robin assignment
├── Or: CODEOWNERS file
├── Or: Random from team
└── No "who should review?" delay

Better Feedback

Review Focus

WHAT TO REVIEW
══════════════

HIGH-VALUE FOCUS:
─────────────────────────────────────
✓ Logic correctness
  "Does this do what it should?"

✓ Edge cases
  "What if input is null/empty/huge?"

✓ Security issues
  "Is this input validated? SQL injection?"

✓ Test coverage
  "Are the important paths tested?"

✓ Maintainability
  "Will future-us understand this?"

✓ Performance (when relevant)
  "Is this O(n²) a problem?"

✓ Architecture alignment
  "Does this follow our patterns?"

DON'T WASTE TIME ON:
─────────────────────────────────────
✗ Formatting (CI handles it)
✗ Style preferences (have style guide)
✗ Naming debates (have conventions)
✗ Obvious things CI catches
✗ Hypothetical future needs
✗ "I would have done it differently"

Feedback Quality

CONSTRUCTIVE FEEDBACK
═════════════════════

CLASSIFY COMMENTS:
─────────────────────────────────────
Blocking:
├── "🚨 This has a security issue: [explain]"
├── "🚨 This will break production: [why]"
├── Must fix before merge
└── Clear and specific

Suggestion:
├── "💡 Consider using X for better Y"
├── "💡 Might be cleaner as..."
├── Optional to address
└── Author decides

Question:
├── "❓ Why did you choose this approach?"
├── "❓ Could you add a comment explaining?"
├── Seeking understanding
└── May reveal issue or be fine

Praise:
├── "🎉 Nice solution to this problem!"
├── "👍 Great test coverage"
├── Reinforce good practices
└── Balance with critiques

EXAMPLE FEEDBACK:
─────────────────────────────────────
Instead of:
"This is wrong"

Say:
"🚨 This query will return all users,
not just active ones. The WHERE clause
needs `AND active = true`. Line 45."

Instead of:
"Use a different name"

Say:
"💡 `data` is generic. Consider `userProfile`
for clarity. (Minor, feel free to keep as-is)"

Avoiding Bikeshedding

PREVENTING BIKESHEDDING
═══════════════════════

HAVE CONVENTIONS:
─────────────────────────────────────
If documented, don't debate:
├── Naming conventions
├── File structure
├── Comment style
├── Error handling patterns
├── Import ordering
└── "Follow the style guide"

TIME LIMIT ON DEBATES:
─────────────────────────────────────
5 minutes discussing style?
├── Stop
├── Either: "Does style guide say?"
├── Or: "Let's update style guide after"
├── Or: "Author's choice, move on"
└── Don't block PR for preferences

THIRD OPINION:
─────────────────────────────────────
Reviewer and author disagree?
├── 2 min to resolve between them
├── If stuck: Third person decides
├── Or: Tech lead breaks tie
├── Document for future
└── Don't let PRs languish

Process

Review Workflow

STREAMLINED REVIEW FLOW
═══════════════════════

1. AUTHOR PREPARES
─────────────────────────────────────
Before requesting review:
├── CI passes
├── Self-review done
├── Description written:
│   ├── What: Change summary
│   ├── Why: Context/ticket link
│   ├── How: Implementation notes
│   ├── Testing: What was tested
│   └── Screenshots: If UI change
├── Size is reasonable
└── Ready for review

2. ASSIGNMENT
─────────────────────────────────────
├── Auto-assigned (CODEOWNERS) OR
├── Author requests specific reviewer OR
├── Round-robin from team
└── GitScrum task moves to "Review"

3. REVIEWER REVIEWS
─────────────────────────────────────
Within 24 hours:
├── Read description
├── Check CI status
├── Review code
├── Leave comments (classified)
├── Approve / Request Changes
└── Done in one pass ideally

4. AUTHOR RESPONDS
─────────────────────────────────────
Within 24 hours:
├── Address all blocking comments
├── Respond to questions
├── Consider suggestions
├── Push updates
├── Re-request review
└── Or discuss if disagree

5. MERGE
─────────────────────────────────────
When approved:
├── Author merges (or auto-merge)
├── Delete branch
├── GitScrum task moves forward
└── Done

GitScrum Integration

Tracking Reviews

GITSCRUM REVIEW TRACKING
════════════════════════

TASK STATUS:
─────────────────────────────────────
Workflow:
├── In Progress (coding)
├── Code Review (PR open) ← Track time here
├── Testing
├── Done
└── Review time visible

LINKING:
─────────────────────────────────────
Link PR to GitScrum task:
├── PR URL in task
├── Status syncs (optional integration)
├── Comments visible
├── Merge updates task
└── Full traceability

REVIEW METRICS:
─────────────────────────────────────
Dashboard:
├── Average time in review
├── Reviews per person
├── PRs waiting > 24h
├── Cycle time impact
└── Identify bottlenecks

Best Practices

For Code Review

1. Small PRs — Under 400 lines
2. Automate checks — CI before human
3. Set SLA — 24 hours first review
4. Classify comments — Blocking vs. suggestion
5. Have conventions — Don't debate basics

Anti-Patterns

CODE REVIEW MISTAKES:
✗ Huge PRs (1000+ lines)
✗ No review SLA
✗ Bikeshedding on style
✗ Only seniors review
✗ Vague feedback
✗ Blocking for preferences
✗ Reviews taking days
✗ No CI before review

Related Solutions

• Improving code review processes
• Reducing context switching overhead
• Improving team collaboration with GitScrum