jetty.xml中的jetty.httpConfig.headerCacheSize有什么意义

What is the significance of jetty.httpConfig.headerCacheSize in jetty.xml

我正在将 jetty 版本从 jetty-9.4.14.v20181114 升级到 jetty-9.4.24.v20191120。 和属性(jetty.httpConfig.headerCacheSize in jetty.xml)值减少(4096 到 1024)。

是否有任何性能原因或其他一些减少它的原因。

Jetty 是开源的。所以这个问题可以通过以下步骤轻松回答:

  1. 找到 source code
  2. 找到 location of the change in the source code
  3. commit message with hopefully linked issue/bug report

这导致 Jetty issue #2709, comment by Greg Wilkins:

We have some feedback that 4kb is frequently wasting memory. Trading the PR, it seams that 1k would have been sufficient, so we should probably dial back to that.