Since Fiber v2.32.0, we use encoding/json as default json library due to stability and producibility. However, the standard library is a bit slow compared to 3rd party libraries. If you're not happy with the performance of encoding/json, we recommend you to use these libraries:
{% code title="Example" %}
package main
import "github.com/gofiber/fiber/v2"
import "github.com/goccy/go-json"
func main() {
app := fiber.New(fiber.Config{
JSONEncoder: json.Marshal,
JSONDecoder: json.Unmarshal,
})
# ...
}{% endcode %}