下面是 nginx playground 的端到端健康检查处理程序的样子。它非常基本：它只是发出一个 POST 请求（给自己），并检查该请求是成功还是失败。
func healthHandler(w http.ResponseWriter, r *http.Request) { // make a request to localhost:8080 with `healthcheckJSON` as the body // if it works, return 200 // if it doesn't, return 500 client := http.Client{} resp, err := client.Post("http://localhost:8080/", "application/json", strings.NewReader(healthcheckJSON)) if err != nil { log.Println(err) w.WriteHeader(http.StatusInternalServerError) return } if resp.StatusCode != http.StatusOK { log.Println(resp.StatusCode) w.WriteHeader(http.StatusInternalServerError) return } w.WriteHeader(http.StatusOK) }