add fetch_length and prefetch varaible

internal/handlers/post.go

@@ -36,13 +36,13 @@ func Fetch_post(c *fiber.Ctx) error {
 	var rec []nimdb.GetPostRow
 	var err error
 	if len(cursor) == 0 {
-		rec, err = internal.NIMDB.GetPost(ctx, 10)
+		rec, err = internal.NIMDB.GetPost(ctx, internal.FETCH_LENGTH)
 		if err != nil {
 			log.Println(err)
 			return fiber.ErrInternalServerError
 		}
 	} else if cursor_num, err := strconv.Atoi(cursor); err == nil {
-		rec_cur, err := internal.NIMDB.GetPostWithCursor(ctx, nimdb.GetPostWithCursorParams{ID: int32(cursor_num), Limit: 10})
+		rec_cur, err := internal.NIMDB.GetPostWithCursor(ctx, nimdb.GetPostWithCursorParams{ID: int32(cursor_num), Limit: internal.FETCH_LENGTH})
 		if err != nil {
 			log.Println(err)
 			return c.Status(500).SendString("Failed to Query DB")

internal/settings.go

@@ -3,12 +3,17 @@ package internal
 import (
 	"errors"
 	"os"
+	"strconv"
 )
 
 var (
 	SALT         string
 	POSTGRES_URL string
 	JWT_SECRET   string
+	FETCH_LENGTH int32
+	PREFORK      bool
+	err          error
+	conv         int64
 )
 
 func ReadFromENV() error {
@@ -24,5 +29,28 @@ func ReadFromENV() error {
 	if len(JWT_SECRET) < 10 {
 		return errors.New("INVALID JWT SECRET")
 	}
+	fetch_len_str := os.Getenv("FETCH_LENGTH")
+	if len(fetch_len_str) == 0 {
+		FETCH_LENGTH = 10
+	} else {
+		conv, err = strconv.ParseInt(fetch_len_str, 10, 32)
+		if err != nil {
+			return err
+		}
+		if conv < 1 {
+			return errors.New("FETCH_LENGTH should be a positive number as well over 0")
+		}
+		FETCH_LENGTH = int32(conv)
+
+	}
+	prefork_str := os.Getenv("PREFORK")
+	if len(prefork_str) == 0 {
+		PREFORK = false
+	} else {
+		PREFORK, err = strconv.ParseBool(prefork_str)
+		if err != nil {
+			return err
+		}
+	}
 	return nil
 }

server.go

@@ -30,7 +30,7 @@ func main() {
 	internal.POOL = dbpool
 	internal.NIMDB = nimdb.New(dbpool)
 
-	app := fiber.New()
+	app := fiber.New(fiber.Config{Prefork: internal.PREFORK})
 
 	app.Get("/", func(c *fiber.Ctx) error {
 		return c.SendString("Hello, World!")