spring javaconfig，xml config和注释之间的性能差异 [英] Performance difference between spring javaconfig, xml config and annotations

问题描述

我们的Spring配置包含大约1200个bean，我们使用component-scan / @ Autowired。如果我们将ApplicationContext导出为Xml（并且仍然使用@Autowired），我们在上下文启动时节省了大约10％。

Our Spring configuration contains about 1200 beans, and we use component-scan/@Autowired. If we exported the ApplicationContext as an Xml (and still used @Autowired), we saved about 10% on context startup-time.

如果我们尝试使用spring javaconfig，我们可以期待什么？

What can we expect if we try spring javaconfig ?

推荐答案

注释和XML之间可能没有区别，相反，它将是使用组件扫描的启动性能， 慢。如果您将组件扫描添加到XML版本，您会发现它的速度一样慢。

The difference is likely not between annotations and XML, but instead it'll be the startup performance hit of using component-scanning, which is slow. If you add component-scanning to your XML version, you should find that it's just as slow.

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