保留系统 meaning in English

legacy systems

Sending a pause request to the service can conserve system resources
向服务发送“暂停”请求可保留系统资源。
The negotiator tries to match available resources with those requests , while maintaining the user priorities in the system
Negotiator视图将可用资源与任务需要的这些资源进行匹配，同时保留系统中用户的优先级。
To preserve system resources , the lock manager automatically performs lock escalation when a configurable threshold on the number of row locks is exceeded
为保留系统资源，当超过行锁数的可配置阈值时，锁管理器将自动执行锁升级。