ECO-CMP-JS-007 — Missing HTTP caching headers (client-side)¶

Category: Computation (CMP)
Family: JavaScript (JS)
Layer: Network
Tier: 2
Severity: warning
Tags: javascript, caching
Legacy ID: ECO-JS-007

Summary¶

Missing cache headers causes repeated downloads and wasted bandwidth.

Caching prevents repeated work; missing caching forces it.

{
  "confidence": 0.7,
  "notes": "High on static assets.",
  "type": "network"
}

{
  "languages": [
    "javascript"
  ],
  "method": "trace"
}

{
  "guidance": "Set Cache-Control/ETag; use immutable assets with hashes.",
  "tradeoffs": "Requires proper build pipeline."
}

{
  "system_layers": [
    "network"
  ]
}