feat: initial commit

internal/store/cache/users.go

@@ -0,0 +1,60 @@
+package cache
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"time"
+
+	"github.com/FernandoVideira/LK_API_Temp/internal/store"
+	"github.com/go-redis/redis/v8"
+)
+
+type UserStore struct {
+	rdb *redis.Client
+}
+
+const UserExpTime = time.Hour * 24
+
+func (s *UserStore) Get(ctx context.Context, id int64) (*store.User, error) {
+	cacheKey := fmt.Sprintf("user-%d", id)
+
+	data, err := s.rdb.Get(ctx, cacheKey).Result()
+	if err == redis.Nil {
+		return nil, nil
+	} else if err != nil {
+		return nil, err
+	}
+
+	var user store.User
+	if data != "" {
+		err := json.Unmarshal([]byte(data), &user)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	return &user, nil
+}
+
+func (s *UserStore) Set(ctx context.Context, user *store.User) error {
+
+	if user.ID == 0 {
+		return fmt.Errorf("user ID is required")
+	}
+
+	cacheKey := fmt.Sprintf("user-%d", user.ID)
+
+	json, err := json.Marshal(user)
+	if err != nil {
+		return err
+	}
+
+	return s.rdb.SetEX(ctx, cacheKey, json, UserExpTime).Err()
+}
+
+func (s *UserStore) Delete(ctx context.Context, id int64) error {
+	cacheKey := fmt.Sprintf("user-%d", id)
+
+	return s.rdb.Del(ctx, cacheKey).Err()
+}