Multithreading

In multi-threaded code, use Casbin’s synchronized enforcer so one enforcer can be shared safely across threads: SyncedEnforcer and SyncedContextEnforcer (Go), enforcer_synced.cpp (C++).

同步的 enforcer 还可以 自动重新加载 策略：调用 StartAutoLoadPolicy() 轮询策略来源并在变化时重新加载；调用 StopAutoLoadPolicy() 停止。

For running several instances, caching and keeping policy in sync, see Production Deployment.