https://blog.csdn.net/mjl1125/article/details/121782863
https://blog.csdn.net/qq_39397165/article/details/108556817#:~:text=go-elasticSearch%E5%AE%9E%E6%88%98%E7%AF%87%EF%BC%8C%E5%B8%A6%E4%BD%A0%E5%AD%A6%E4%BC%9AelasticSearch%E7%9A%84%E5%A2%9E%E5%88%A0%E6%94%B9%E6%9F%A5%201%201.%20%E5%88%9B%E5%BB%BA%E5%AE%A2%E6%88%B7%E7%AB%AF%202%202.,%E5%88%9B%E5%BB%BAindex%E5%8F%8Amapping%203%203.%20%E6%89%B9%E9%87%8F%E6%B7%BB%E5%8A%A0%204%204.%20%E6%89%B9%E9%87%8F%E6%9B%B4%E6%96%B0
https://juejin.cn/post/7187290206712627237