统计

版权声明 本站原创文章 由 萌叔 发表 转载请注明 萌叔 | http://vearne.cc 前言 最近打算给我的博客做个性化推荐，初步选定使用关联规则算法来实现。 常见关联规则算法又有Apriori算法、FP-树频集算法、Eclat算法 3种。 请务必阅读参考资料1，了解Support(支持度), Confidence(置信度)， Lift（提升度） Association rules are usually required to satisfy a user-specified minimum support and a user-specified minimum confidence at the same time. Association rule generation is usually split up into two separate steps: A minimum support threshold is applied to find all frequent itemsets in a database. A minimum confidence constraint is applied to these frequent itemsets in order to form rules. While the second step is straightforward, the first step needs more attention. ...

版权声明 本站原创文章 由 萌叔 发表 转载请注明 萌叔 | http://vearne.cc 1. 引言 gin-gonic/gin 是Golang API 开发中最常用到的web框架。我们可以轻松的写一个gin的中间件获取HTTP的状态码, 然后暴露给phrometheus。但是如果我想获取的body体中的错误码呢? 2. 官方的例子 package main import ( "time" "log" "github.com/gin-gonic/gin" ) func Logger() gin.HandlerFunc { return func(c *gin.Context) { t := time.Now() // Set example variable c.Set("example", "12345") // before request c.Next() // after request latency := time.Since(t) log.Println("latency", latency) // access the status we are sending status := c.Writer.Status() log.Println("status_code", status) } } func main() { r := gin.New() r.Use(Logger()) r.GET("/test", func(c *gin.Context) { example := c.MustGet("example").(string) // it would print: "12345" log.Println(example) }) // Listen and serve on 0.0.0.0:8080 r.Run(":8080") } 3. 读取body中的错误码 假定我们的服务在请求处理失败的情况下，返回如下结构体 ...