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功能 | 支持情况 | 备注 |
---|---|---|
实时预览 | ✅ | 需要插件 |
导出PDF | ⚠️ 部分支持 | 格式可能错位 |
settings:
theme: dark
autoSave: true
单位矩阵示例:
[ 1 0 ]
[ 0 1 ]
简单公式: E = mc²
📌 重点章节
颜色 | 使用场景 | 示例 |
---|---|---|
#2E86C1 | 主标题 | |
#27AE60 | 成功状态 | ✅ 操作成功 |
# 优雅的代码片段
class Designer:
def __init__(self):
self.style = "modern"
A blockquote with some emphasis.
This is the detailed content
console.log("Markdown features including the code block are available");
You can use Markdown here including bold and italic text, and inline link
😲😲😲😲😲
⚠️ 重要提示:
java --enable-preview -jar your_app.jar
"虚拟线程是Java并发模型的革命性改进,它使编写、调试和维护高并发应用变得前所未有的简单"
— Brian Goetz (Java语言架构师)
虚拟线程是Java平台引入的轻量级线程实现,作为Project Loom的一部分,旨在解决传统线程模型在高并发场景下的局限性。虚拟线程由JVM管理,而不是操作系统,这使得创建和管理成千上万个线程变得可能且高效。
特性 | 平台线程 | 虚拟线程 |
---|---|---|
内存占用 | 约2MB | 约1KB |
创建开销 | 高 | 低 |
上下文切换 | 昂贵 | 轻量 |
适用场景 | 计算密集型 | I/O密集型 |
创建并启动虚拟线程非常简单:
// 创建并启动虚拟线程
Thread vThread = Thread.startVirtualThread(() -> {
System.out.println("Hello from Virtual Thread!");
});
// 等待虚拟线程完成
vThread.join();
您还可以使用ExecutorService创建虚拟线程:
try (var executor = Executors.newVirtualThreadPerTaskExecutor()) {
IntStream.range(0, 10_000).forEach(i -> {
executor.submit(() -> {
// 执行任务
Thread.sleep(Duration.ofMillis(100));
return i;
});
});
} // executor自动关闭
使用虚拟线程处理HTTP请求可以显著提高Web服务器的吞吐量:
@GetMapping("/data")
public ResponseEntity<String> getData() {
// 每个请求分配一个虚拟线程,而不是使用线程池
return ResponseEntity.ok("处理请求的虚拟线程: " + Thread.currentThread());
}
虚拟线程特别适合数据库操作等I/O密集型任务:
// 使用虚拟线程执行批量数据库查询
List<CompletableFuture<Result>> futures = queries.stream()
.map(query -> CompletableFuture.supplyAsync(() -> {
return database.executeQuery(query);
}, virtualThreadExecutor))
.toList();
// 等待所有查询完成
List<Result> results = futures.stream()
.map(CompletableFuture::join)
.toList();
*基于10,000个并发HTTP请求的处理时间,每个请求包含100ms的I/O等待
Java虚拟线程代表了Java并发编程的重大进步,通过提供轻量级线程实现,它使开发人员能够编写简单、直观且高效的并发代码。虚拟线程特别适合构建高吞吐量的网络服务、微服务和其他I/O密集型应用。
随着Java 21将虚拟线程正式发布为稳定特性,现在是探索和采用这一技术的最佳时机。
"虚拟线程让我们重新思考Java的并发模型,它不仅提高了性能,更重要的是简化了编程模型,让开发者可以专注于业务逻辑而非并发控制。"
Oracle启动Project Loom项目,旨在为JVM带来轻量级线程实现
首个虚拟线程原型发布,开发者可以开始实验
虚拟线程作为预览特性首次在JDK 16中亮相
虚拟线程成为正式特性,标志着Java并发编程的新纪元
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HTML is a lovely language.
And here is markdown in JSX!
This is the detailed content
console.log("Markdown features including the code block are available");
You can use Markdown here including bold and italic text, and inline link
😲😲😲😲😲
Docusaurus green and Facebook blue are my favorite colors.
I can write Markdown alongside my JSX!
And some custom markup...
Blog posts support Docusaurus Markdown features, such as MDX.
Use the power of React to create interactive blog posts.
Blog posts support Docusaurus Markdown features, such as MDX.
Use the power of React to create interactive blog posts.
Blog posts support Docusaurus Markdown features, such as MDX.
Use the power of React to create interactive blog posts.
This is the summary of a very long blog post,
Use a <!--
truncate
-->
comment to limit blog post size in the list view.
Blog posts support Docusaurus Markdown features, such as MDX.
Use the power of React to create interactive blog posts.
This is the summary of a very long blog post,
Use a <!--
truncate
-->
comment to limit blog post size in the list view.
This is the summary of a very long blog post,
Use a <!--
truncate
-->
comment to limit blog post size in the list view.
这些内容会显示在博客摘要中。
Docusaurus blogging features are powered by the blog plugin.
Here are a few tips you might find useful.
Blog posts support Docusaurus Markdown features, such as MDX.
Use the power of React to create interactive blog posts.
This is the summary of a very long blog post,
Use a <!--
truncate
-->
comment to limit blog post size in the list view.