在重新做新的系统的时候，旧有的很多东西依然存在
An alternative route is to gradually create a new system around the edges of the old, letting it grow slowly over several years until the old system is strangled.
The most important reason to consider a strangler application over a cut-over rewrite is reduced risk.
There’s another important idea here - when designing a new application you should design it in such a way as to make it easier for it to be strangled in the future
嫁接起来，足够地简单