A cache should also maintain a reasonable upper size limit to avoid memory over-utilization in custom code.
缓存还应该维护一个合理的大小上限，以避免自定义代码中内存的过度使用。
2
This means that database manager automatically determines the upper boundary on memory consumption.
这意味着数据库管理器自动确定内存使用的上限。
3
In the GC and Memory Visualizer, templates let you to save these combinations for later use. The templates view is in the upper left corner of the window, as shown in Figure 11.