作为一个大的系统软件，如果避免内存泄露（memory leakage）是系统实现所面对的关键问题之一，PostgreSQL利用MemoryContext这个概念来解决这个问题，先来看看几个数据结构的定义：
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This not only frees the developer from responsibility for explicitly releasing objects in code, but also reduces the risk of memory leakage.
这不仅使开发人员不必在代码中显式地释放对象，还可以减少内存泄漏的风险。
This mechanism will generate multiple heap dumps that have been coordinated with sufficient memory leakage to facilitate comparative analysis using MDD4J.
此机制将生成与足够内存泄漏协调的多个堆转储，以便于使用 MDD4J 进行比较分析。
This ensures that Heap dumps are taken after evidence of the memory leak is apparent, and with enough memory leakage to ensure the best chance of a valid analysis result.
这可以确保在确定内存泄漏之后获取堆转储，并通过足够的内存泄漏获得最有效的分析结果。
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