AgentSkillsCN

capacity-planning

根据预期负载规划基础设施容量。当您需要进行系统规模评估、制定增长计划，或分析资源需求时，此技能将助您事半功倍。涵盖负载估算与资源 sizing。

SKILL.md
--- frontmatter
name: capacity-planning
description: Plan infrastructure capacity for expected load. Use when sizing systems, planning for growth, or analyzing resource requirements. Covers load estimation and resource sizing.
allowed-tools: Read, Bash, Glob, Grep

Capacity Planning

Workflows

  • • Baseline: Measure current resource usage
  • • Forecast: Project future growth
  • • Size: Calculate required resources
  • • Buffer: Add headroom for spikes
  • • Monitor: Track actual vs. predicted

Key Metrics

Compute

  • •CPU utilization (target: 60-70%)
  • •Memory usage
  • •Request latency (P50, P95, P99)

Storage

  • •Disk IOPS
  • •Throughput (MB/s)
  • •Capacity growth rate

Network

  • •Bandwidth utilization
  • •Connection counts
  • •Packet loss

Estimation Framework

Little's Law

code
L = λ × W

L = Average number of items in system
λ = Average arrival rate
W = Average time in system

Example Calculation

code
Given:
- 1000 requests/second
- 100ms average response time

Required concurrent connections:
L = 1000 × 0.1 = 100 concurrent connections

Resource Sizing

Database Connections

code
connections = (requests_per_second × avg_query_time) × 1.5

Memory

code
memory = (concurrent_users × memory_per_user) + base_overhead

CPU Cores

code
cores = (peak_rps × cpu_time_per_request) / target_utilization

Growth Planning

Traffic Growth

  • •Historical growth rate
  • •Planned marketing/launches
  • •Seasonal patterns

Data Growth

  • •Records per day
  • •Record size
  • •Retention policy

Capacity Planning Document

  1. •Current state metrics
  2. •Growth assumptions
  3. •Resource projections (3, 6, 12 months)
  4. •Cost estimates
  5. •Scaling triggers and thresholds