concurrenthashmap什么时候扩容

ConcurrentHashMap的扩容是在添加数据时触发的。具体来说，当CHM中容纳的元素数量超过了当前哈希表长度的0.75时，就会触发扩容检查。如果发现需要扩容，CHM会启动扩容过程来重新分配元素并调整内部数据结构，以保持较高的并发性能。需要注意的是，在扩容过程中，CHM会逐段进行迁移操作而不会对整个哈希表进行全局锁定，这使得CHM可以在扩容过程中保持较高的并发性能。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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- *1* [Java ConcurrentHashMap的扩容过程详解](https://blog.csdn.net/a772304419/article/details/131012692)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
- *2* *3* [ConcurrentHashMap的扩容](https://blog.csdn.net/pc_fly/article/details/125108562)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
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