How do you handle HTTP server health checks in Go?
In Go, you can handle HTTP server health checks by implementing a handler function that returns an HTTP status code indicating the health of the server. One common approach is to use the "/health" endpoint to indicate the health of the server. This endpoint can be accessed by the monitoring system to check the status of the server.
Server Health Check
Here's an example of implementing a health check endpoint in Go.
Example
package main
import (
"fmt"
"net/http"
)
func main() {
http.HandleFunc("/health", healthCheckHandler)
http.ListenAndServe(":8080", nil)
}
func healthCheckHandler(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusOK)
fmt.Fprintf(w, "Server is healthy")
}
In this example, we define a handler function named healthCheckHandler that simply returns an HTTP status code of 200 (OK) along with a message indicating that the server is healthy. We then register this handler function to the "/health" endpoint using the http.HandleFunc method, and start the server using the http.ListenAndServe method.
When the monitoring system sends a GET request to the "/health" endpoint, it will receive a response with an HTTP status code of 200 and the message "Server is healthy". This indicates that the server is running and is healthy. If the server is not healthy, we can return a different HTTP status code, such as 500 (Internal Server Error), to indicate that there is a problem with the server.
Most Helpful This Week
Regular expression to validate common Credit Card NumbersSimple function with return value in GolangHow to compare equality of struct, slice and map?How to verify a string only contains letters, numbers, underscores, and dashes in Golang?Get current date and time in various format in golangSierpinski triangle in Go Programming LanguageCreating a Function in GolangHow to read current directory using Readdir?Golang String ConcatenationHow can I convert a string variable into Boolean, Integer or Float type in Golang?