| name | on-call-handoff-patterns |
| description | ALWAYS use this when the request matches ON Call Handoff Patterns: Effective patterns for on-call shift transitions, ensuring continuity, context transfer, and reliable incident response across shifts. |
On-Call Handoff Patterns
Selective Reading Rule
Start with:
references/senior-master-standard.mdreferences/usage-routing.mdreferences/quality-checklist.md
Then load only the inherited docs, scripts, assets, or examples that match the user's actual task.
Effective patterns for on-call shift transitions, ensuring continuity, context transfer, and reliable incident response across shifts.
Do not use this skill when
- The task is unrelated to on-call handoff patterns
- You need a different domain or tool outside this scope
Instructions
- Clarify goals, constraints, and required inputs.
- Apply relevant best practices and validate outcomes.
- Provide actionable steps and verification.
- If detailed examples are required, open
resources/implementation-playbook.md.
Use this skill when
- Transitioning on-call responsibilities
- Writing shift handoff summaries
- Documenting ongoing investigations
- Establishing on-call rotation procedures
- Improving handoff quality
- Onboarding new on-call engineers
Core Concepts
1. Handoff Components
| Component | Purpose |
|---|
| Active Incidents | What's currently broken |
| Ongoing Investigations | Issues being debugged |
| Recent Changes | Deployments, configs |
| Known Issues | Workarounds in place |
| Upcoming Events | Maintenance, releases |
2. Handoff Timing
Recommended: 30 min overlap between shifts
Outgoing:
├── 15 min: Write handoff document
└── 15 min: Sync call with incoming
Incoming:
├── 15 min: Review handoff document
├── 15 min: Sync call with outgoing
└── 5 min: Verify alerting setup
Templates
Template 1: Shift Handoff Document
# On-Call Handoff: Platform Team
**Outgoing**: @alice (2024-01-15 to 2024-01-22)
**Incoming**: @bob (2024-01-22 to 2024-01-29)
**Handoff Time**: 2024-01-22 09:00 UTC
---
## 🔴 Active Incidents
### None currently active
No active incidents at handoff time.
---
## 🟡 Ongoing Investigations
### 1. Intermittent API Timeouts (ENG-1234)
**Status**: Investigating
**Started**: 2024-01-20
**Impact**: ~0.1% of requests timing out
**Context**:
- Timeouts correlate with database backup window (02:00-03:00 UTC)
- Suspect backup process causing lock contention
- Added extra logging in PR #567 (deployed 01/21)
**Next Steps**:
- [ ] Review new logs after tonight's backup
- [ ] Consider moving backup window if confirmed
**Resources**:
- Dashboard: [API Latency](https://grafana/d/api-latency)
- Thread: #platform-eng (01/20, 14:32)
---
### 2. Memory Growth in Auth Service (ENG-1235)
**Status**: Monitoring
**Started**: 2024-01-18
**Impact**: None yet (proactive)
**Context**:
- Memory usage growing ~5% per day
- No memory leak found in profiling
- Suspect connection pool not releasing properly
**Next Steps**:
- [ ] Review heap dump from 01/21
- [ ] Consider restart if usage > 80%
**Resources**:
- Dashboard: [Auth Service Memory](https://grafana/d/auth-memory)
- Analysis doc: [Memory Investigation]()
---
: 23 minutes
: Database connection exhaustion
: Rolled back v2.3.4, increased pool size
: []()
: ENG-1230, ENG-1231
---
| Service | Version | Time | Notes |
|---------|---------|------|-------|
| api-gateway | v3.2.1 | 01/21 14:00 | Bug fix for header parsing |
| user-service | v2.8.0 | 01/20 10:00 | New profile features |
| auth-service | v4.1.2 | 01/19 16:00 | Security patch |
01/21: Increased API rate limit from 1000 to 1500 RPS
01/20: Updated database connection pool max from 50 to 75
01/20: Added 2 nodes to Kubernetes cluster
01/19: Upgraded Redis from 6.2 to 7.0
---
: Grafana dashboards slow on Monday mornings
: Wait 5 min after 08:00 UTC for cache warm-up
: OPS-456 (P3)
: fails intermittently in CI
: Re-run failed job (usually passes on retry)
: ENG-1200 (P2)
---
| Date | Event | Impact | Contact |
|------|-------|--------|---------|
| 01/23 02:00 | Database maintenance | 5 min read-only | @dba-team |
| 01/24 14:00 | Major release v5.0 | Monitor closely | @release-team |
| 01/25 | Marketing campaign | 2x traffic expected | @platform |
---
| Issue Type | First Escalation | Second Escalation |
|------------|------------------|-------------------|
| Payment issues | @payments-oncall | @payments-manager |
| Auth issues | @auth-oncall | @security-team |
| Database issues | @dba-team | @infra-manager |
| Unknown/severe | @engineering-manager | @vp-engineering |
---
Important Links
Handoff Checklist
Outgoing Engineer
Incoming Engineer
### Template 2: Quick Handoff (Async)
```markdown
# Quick Handoff: @alice → @bob
## TL;DR
- No active incidents
- 1 investigation ongoing (API timeouts, see ENG-1234)
- Major release tomorrow (01/24) - be ready for issues
## Watch List
1. API latency around 02:00-03:00 UTC (backup window)
2. Auth service memory (restart if > 80%)
## Recent
- Deployed api-gateway v3.2.1 yesterday (stable)
- Increased rate limits to 1500 RPS
## Coming Up
- 01/23 02:00 - DB maintenance (5 min read-only)
- 01/24 14:00 - v5.0 release
## Questions?
I'll be available on Slack until 17:00 today.
Template 3: Incident Handoff (Mid-Incident)
# INCIDENT HANDOFF: Payment Service Degradation
**Incident Start**: 2024-01-22 08:15 UTC
**Current Status**: Mitigating
**Severity**: SEV2
---
## Current State
- Error rate: 15% (down from 40%)
- Mitigation in progress: scaling up pods
- ETA to resolution: ~30 min
## What We Know
1. Root cause: Memory pressure on payment-service pods
2. Triggered by: Unusual traffic spike (3x normal)
3. Contributing: Inefficient query in checkout flow
## What We've Done
- Scaled payment-service from 5 → 15 pods
- Enabled rate limiting on checkout endpoint
- Disabled non-critical features
## What Needs to Happen
1. Monitor error rate - should reach <1% in ~15 min
2. If not improving, escalate to @payments-manager
3. Once stable, begin root cause investigation
## Key People
- Incident Commander: @alice (handing off)
- Comms Lead: @charlie
- Technical Lead: @bob (incoming)
## Communication
- Status page: Updated at 08:45
- Customer support: Notified
- Exec team: Aware
## Resources
- Incident channel: #inc-20240122-payment
- Dashboard: [Payment Service](https://grafana/d/payments)
- Runbook: [Payment Degradation](https://wiki/runbooks/payments)
---
**Incoming on-call (@bob) - Please confirm you have:**
- [ ] Joined #inc-20240122-payment
- [ ] Access to dashboards
- [ ] Understand current state
[ ] Know escalation path
Handoff Sync Meeting
Agenda (15 minutes)
## Handoff Sync: @alice → @bob
1. **Active Issues** (5 min)
- Walk through any ongoing incidents
- Discuss investigation status
- Transfer context and theories
2. **Recent Changes** (3 min)
- Deployments to watch
- Config changes
- Known regressions
3. **Upcoming Events** (3 min)
- Maintenance windows
- Expected traffic changes
- Releases planned
4. **Questions** (4 min)
- Clarify anything unclear
- Confirm access and alerting
- Exchange contact info
On-Call Best Practices
Before Your Shift
## Pre-Shift Checklist
### Access Verification
- [ ] VPN working
- [ ] kubectl access to all clusters
- [ ] Database read access
- [ ] Log aggregator access (Splunk/Datadog)
- [ ] PagerDuty app installed and logged in
### Alerting Setup
- [ ] PagerDuty schedule shows you as primary
- [ ] Phone notifications enabled
- [ ] Slack notifications for incident channels
- [ ] Test alert received and acknowledged
### Knowledge Refresh
- [ ] Review recent incidents (past 2 weeks)
- [ ] Check service changelog
- [ ] Skim critical runbooks
- [ ] Know escalation contacts
### Environment Ready
- [ ] Laptop charged and accessible
- [ ] Phone charged
- [ ] Quiet space available for calls
- [ ] Secondary contact identified (if traveling)
During Your Shift
## Daily On-Call Routine
### Morning (start of day)
- [ ] Check overnight alerts
- [ ] Review dashboards for anomalies
- [ ] Check for any P0/P1 tickets created
- [ ] Skim incident channels for context
### Throughout Day
- [ ] Respond to alerts within SLA
- [ ] Document investigation progress
- [ ] Update team on significant issues
- [ ] Triage incoming pages
### End of Day
- [ ] Hand off any active issues
- [ ] Update investigation docs
- [ ] Note anything for next shift
After Your Shift
## Post-Shift Checklist
- [ ] Complete handoff document
- [ ] Sync with incoming on-call
- [ ] Verify PagerDuty routing changed
- [ ] Close/update investigation tickets
- [ ] File postmortems for any incidents
- [ ] Take time off if shift was stressful
Escalation Guidelines
When to Escalate
## Escalation Triggers
### Immediate Escalation
- SEV1 incident declared
- Data breach suspected
- Unable to diagnose within 30 min
- Customer or legal escalation received
### Consider Escalation
- Issue spans multiple teams
- Requires expertise you don't have
- Business impact exceeds threshold
- You're uncertain about next steps
### How to Escalate
1. Page the appropriate escalation path
2. Provide brief context in Slack
3. Stay engaged until escalation acknowledges
4. Hand off cleanly, don't just disappear
Best Practices
Do's
- Document everything - Future you will thank you
- Escalate early - Better safe than sorry
- Take breaks - Alert fatigue is real
- Keep handoffs synchronous - Async loses context
- Test your setup - Before incidents, not during
Don'ts
- Don't skip handoffs - Context loss causes incidents
- Don't hero - Escalate when needed
- Don't ignore alerts - Even if they seem minor
- Don't work sick - Swap shifts instead
- Don't disappear - Stay reachable during shift
Resources
Limitations
- Use this skill only when the task clearly matches the scope described above.
- Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
- Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.
