isHeuristicFreshness() — fiber Function Reference

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

Function go FiberMiddleware Caching calls 1 called by 1

Entity Profile

FiberMiddleware→ Caching→ isHeuristicFreshness() — fiber Function Reference

Dependency Diagram

graph TD
  78a8133c_9901_bed6_5e41_2ed9d832dd4d["isHeuristicFreshness()"]
  af95e058_7e86_ec88_42f0_cd294e342508["cache.go"]
  78a8133c_9901_bed6_5e41_2ed9d832dd4d -->|defined in| af95e058_7e86_ec88_42f0_cd294e342508
  96447356_67b9_a364_148e_b703c487e1ba["New()"]
  96447356_67b9_a364_148e_b703c487e1ba -->|calls| 78a8133c_9901_bed6_5e41_2ed9d832dd4d
  76f49f0c_927d_0294_f6e3_8860aa88da2e["parseResponseCacheControl()"]
  78a8133c_9901_bed6_5e41_2ed9d832dd4d -->|calls| 76f49f0c_927d_0294_f6e3_8860aa88da2e
  style 78a8133c_9901_bed6_5e41_2ed9d832dd4d fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

middleware/cache/cache.go lines 1180–1196

func isHeuristicFreshness(e *item, cfg *Config, entryAge uint64) bool {
	const heuristicAgeThresholdSeconds = uint64(24 * time.Hour / time.Second)
	if entryAge <= heuristicAgeThresholdSeconds {
		return false
	}

	if len(e.expires) > 0 {
		return false
	}

	cacheControl := utils.UnsafeString(e.cacheControl)
	if parsedCC := parseResponseCacheControl(utils.UnsafeBytes(cacheControl)); parsedCC.maxAgeSet || parsedCC.sMaxAgeSet {
		return false
	}

	return cfg.Expiration > 0
}