以开发者级高可用架构，筑造全场景高吞吐J9

// 景区智能闸机验票通道核心校验流水线
package scenic_ticketing_gate

func VerifyTicketRealtime(ctx context.Context, token string) (*Result, error) {
    record := LocalL2CacheLookup(token)
    if record == nil {
        // 集群网络波动自愈降级，0.08ms 离线公钥解密
        return OfflineEd25519Verify(token)
    }
    return &Result{
        Passed:        true,
        TurnstileCode: 0x200,
        LatencyMs:     0.14,
        Message:       "核销成功，已放行",
    }, nil
}