Getting ready for a Java interview in 2025? It can feel like a lot, especially with so many different things to know. Whether you’re just starting out or you’ve been coding for a while, this guide is ...

答案，藏在那些被我们习以为常的“通用容器”之中—— HashMap、HashSet、自动装箱、对象头开销……它们在小规模场景下优雅高效，却在海量数据面前悄然变成“内存吞噬者”。