Method GC

internal/stats/user_agent_parser.go:129–146

GC 回收多余的缓存

()

// GC 回收多余的缓存
func (this *UserAgentParser) GC() {
	var total = this.Len()
	if total > this.maxCacheItems {
		for {
			var shardingIndex = this.gcIndex

			this.mu.Lock(shardingIndex)
			total -= len(this.cacheMaps[shardingIndex])
			this.cacheMaps[shardingIndex] = map[uint64]UserAgentParserResult{}
			this.gcIndex = (this.gcIndex + 1) % userAgentShardingCount
			this.mu.Unlock(shardingIndex)

			if total <= this.maxCacheItems {
				break
			}
		}
	}
}