cachedResponseAge() — fiber Function Reference

Architecture documentation for the cachedResponseAge() function in cache.go from the fiber codebase.

Function go FiberMiddleware Caching calls 1 called by 1

Entity Profile

FiberMiddleware→ Caching→ cachedResponseAge() — fiber Function Reference

Dependency Diagram

graph TD
  91ff379d_ad97_f896_9c48_6574a957d3c1["cachedResponseAge()"]
  af95e058_7e86_ec88_42f0_cd294e342508["cache.go"]
  91ff379d_ad97_f896_9c48_6574a957d3c1 -->|defined in| af95e058_7e86_ec88_42f0_cd294e342508
  96447356_67b9_a364_148e_b703c487e1ba["New()"]
  96447356_67b9_a364_148e_b703c487e1ba -->|calls| 91ff379d_ad97_f896_9c48_6574a957d3c1
  03bedd00_a450_6002_7e6e_f9a1125a9591["clampDateSeconds()"]
  91ff379d_ad97_f896_9c48_6574a957d3c1 -->|calls| 03bedd00_a450_6002_7e6e_f9a1125a9591
  style 91ff379d_ad97_f896_9c48_6574a957d3c1 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

middleware/cache/cache.go lines 1142–1161

func cachedResponseAge(e *item, now uint64) uint64 {
	clampedDate := clampDateSeconds(e.date, now)

	resident := uint64(0)
	if e.exp != 0 {
		if e.exp <= now {
			resident = e.ttl + (now - e.exp)
		} else {
			resident = e.ttl - (e.exp - now)
		}
	}

	dateAge := uint64(0)
	if clampedDate != 0 && now > clampedDate {
		dateAge = now - clampedDate
	}

	currentAge := max(dateAge, max(resident, e.age))
	return currentAge
}