But of course, like any immutable system, there are mutable parts (otherwise, we couldn’t create any configuration files). OSTree handles this with “overlays” (actually, we use OverlayFS) that allow a read-write filesystem to be layered on top of the immutable system. For example, the /etc and /var directories are writable, while the rest of the system is read-only.
It is also necessary to emphasize that many optimizations are only possible in parts of the spec that are unobservable to user code. The alternative, like Bun "Direct Streams", is to intentionally diverge from the spec-defined observable behaviors. This means optimizations often feel "incomplete". They work in some scenarios but not in others, in some runtimes but not others, etc. Every such case adds to the overall unsustainable complexity of the Web streams approach which is why most runtime implementers rarely put significant effort into further improvements to their streams implementations once the conformance tests are passing.。关于这个话题，Line官方版本下载提供了深入分析
。业内人士推荐heLLoword翻译官方下载作为进阶阅读
[qjoly@fedora]~% rpm-ostree status
AEON凭借类人化躯体设计，可灵活更换夹持器与扫描工具，适配多工序作业需求，并能实现轮端动态移动。。服务器推荐对此有专业解读