JIT compilation was introduced in Postgres 11 in 2018. It solves a problem of Postgres having to interpret expressions and use inefficient per-row loops in run-time in order to do internal data conversions (so-called tuple deforming).
It asks is_none() to update the bitmap, then serializes with unwrap_or_self() if the value exists.，推荐阅读WPS下载最新地址获取更多信息
In most cases, just plain old method invocations will do. If two Business-Modules are on the same level (like e.g. “H&V Controller” and “H&V Simulator” from the example in point 4), invoking a public class’ method is just fine. It doesn’t even have to be an interface, although in some cases that’s handy.，推荐阅读谷歌浏览器下载获取更多信息
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