# High Latency Runbook

## Overview
Response time degradation affecting user experience.

## Detection
- P99 latency > 2s for 5 minutes
- Check APM dashboard

## Diagnosis Steps
1. Identify slow endpoints via APM
2. Check database query performance
3. Review cache hit rates
4. Check external API dependencies

## Mitigation
1. Enable caching for slow endpoints
2. Add database indexes
3. Implement circuit breakers for slow dependencies

## Prevention Checklist
- [ ] Add latency SLOs for all critical endpoints
- [ ] Set up query performance monitoring
- [ ] Implement request timeout policies