How do I cache HTTP responses with Redis in Go?

Caching HTTP responses is an effective way to optimize the performance of your Go applications by reducing the load on external services and speeding up response times. In this example, we'll demonstrate how to use Redis as a caching layer for HTTP responses in Go.

Example Code


            package main

            import (
                "encoding/json"
                "net/http"
                "github.com/go-redis/redis/v8"
                "context"
                "time"
            )

            var ctx = context.Background()

            func main() {
                rdb := redis.NewClient(&redis.Options{
                    Addr: "localhost:6379",
                })

                http.HandleFunc("/data", func(w http.ResponseWriter, r *http.Request) {
                    // Check if response is in cache
                    cachedData, err := rdb.Get(ctx, "cached_data").Result()
                    if err == nil {
                        // Return cached response
                        w.Header().Set("Content-Type", "application/json")
                        w.Write([]byte(cachedData))
                        return
                    }

                    // Simulate fetching new data
                    responseData := map[string]string{"message": "Hello, world!"}
                    jsonData, _ := json.Marshal(responseData)

                    // Store response in Redis cache
                    rdb.Set(ctx, "cached_data", jsonData, 10*time.Minute)

                    // Return new response
                    w.Header().Set("Content-Type", "application/json")
                    w.Write(jsonData)
                })

                http.ListenAndServe(":8080", nil)
            }

How do I cache HTTP responses with Redis in Go?

Example Code

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How do I cache HTTP responses with Redis in Go?

Example Code

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