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perf(service): jitterTTL 改用 rand/v2 并移除锁

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This commit is contained in:
yangjianbo
2026-02-06 21:22:38 +08:00
parent c4182f8c33
commit ae1ba45350
1 changed files with 2 additions and 5 deletions
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7
backend/internal/service/api_key_auth_cache_impl.go
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@@ -22,11 +22,6 @@ type apiKeyAuthCacheConfig struct {
singleflight bool singleflight bool
} }
var (
// 认证缓存抖动直接使用 rand/v2 的顶层函数。
// rand/v2 顶层函数并发安全，避免全局互斥锁成为热点。
)
func newAPIKeyAuthCacheConfig(cfg *config.Config) apiKeyAuthCacheConfig { func newAPIKeyAuthCacheConfig(cfg *config.Config) apiKeyAuthCacheConfig {
if cfg == nil { if cfg == nil {
return apiKeyAuthCacheConfig{} return apiKeyAuthCacheConfig{}
@@ -54,6 +49,8 @@ func (c apiKeyAuthCacheConfig) negativeEnabled() bool {
return c.negativeTTL > 0 return c.negativeTTL > 0
} }
// jitterTTL 为缓存 TTL 添加抖动，避免多个请求在同一时刻同时过期触发集中回源。
// 这里直接使用 rand/v2 的顶层函数：并发安全，无需全局互斥锁。
func (c apiKeyAuthCacheConfig) jitterTTL(ttl time.Duration) time.Duration { func (c apiKeyAuthCacheConfig) jitterTTL(ttl time.Duration) time.Duration {
if ttl <= 0 { if ttl <= 0 {
return ttl return ttl