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Signed-off-by: LinkCaau <chaodongyue@163.com>
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_posts/2025-12-12-apache-poi-output-excel-as-streaming.md

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@@ -3,6 +3,7 @@ title: Apache POI 以流(Stream)的方式下载Excel
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date: 2025-12-12 17:00:00 +0800
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categories: [Blogging, Java]
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tags: [java]
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description: 深入讲解使用 Apache POI 实现 Excel 文件流式输出的方法,涵盖大数据量导出、SXSSFWorkbook 流式写入解决 OOM、边读取数据边输出到客户端的实践示例与优化技巧,帮助 Java 开发者构建高效 Excel 导出接口
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> 文章写于2019年, 可能已过时或有出入

_posts/2025-12-12-how-to-calculate-threadpool-size.md

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date: 2025-12-12 14:10:00 +0800
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categories: [Blogging, Java]
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tags: [java]
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description: 系统讲解如何估算线程池大小,基于任务类型区分 CPU 密集型与 IO 密集型,结合 CPU 核数与等待/计算时间比给出线程数计算思路,并分析估算公式及实际调整策略,帮助 Java 并发开发者合理配置线程池以提升性能
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# 如何合理地估算线程池大小?

_posts/2025-12-12-java-generics.md

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@@ -3,6 +3,7 @@ title: Java 泛型通配符
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date: 2025-12-12 15:00:00 +0800
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categories: [Blogging, Java]
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description: 介绍 Java 泛型通配符的原理与使用,包括 <? extends T> 上界、<? super T> 下界的赋值规则、读写行为差异及实际应用场景,帮助 Java 开发者更清晰理解泛型边界与类型安全
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# Java 泛型通配符

_posts/2025-12-15-SSLSocketImpl-memory-leak.md

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@@ -3,6 +3,7 @@ title: SSLSocketImpl 内存泄漏
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date: 2025-12-15 9:00:00 +0800
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categories: [Blogging, Java]
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description: 本文深入分析 Java 应用中 SSLSocketImpl 导致的内存泄漏问题,通过堆分析定位原因,揭示 Finalizer 对象堆积及连接未及时回收的核心根源,并提供实用的优化与解决思路,帮助开发者排查 HTTPS 连接引起的内存增长
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## 发现问题

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