无法释放内存

在自定义进程中，使用TableManager::get('order')->set($orderSn, $orderData);进行数据写入，然后使用TableManager::get('order')->del($orderSn);无法释放掉内存，内存会一直堆积，直到自定义进程崩掉重启

Start by reproducing the reported sequence in a custom process: write with TableManager::get('order')->set($orderSn, $orderData), then delete with TableManager::get('order')->del($orderSn). Trace the TableManager set and del behavior; done means repeated writes and deletions no longer cause memory to keep accumulating until the process crashes.

Scritto dal modello di indicizzazione a partire dal testo della issue.