新增功能

internal/cache/brand_cache.go

@@ -0,0 +1,44 @@
+package cache
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"time"
+
+	"github.com/luxsin/app-api/internal/model"
+	"github.com/redis/go-redis/v9"
+)
+
+const (
+	brandAllKey = "brand:all"
+	brandTTL    = 30 * time.Minute
+)
+
+type BrandCache struct {
+	rdb *redis.Client
+}
+
+func NewBrandCache(rdb *redis.Client) *BrandCache {
+	return &BrandCache{rdb: rdb}
+}
+
+func (c *BrandCache) GetAll(ctx context.Context) ([]model.Brand, error) {
+	data, err := c.rdb.Get(ctx, brandAllKey).Bytes()
+	if err != nil {
+		return nil, err
+	}
+	var list []model.Brand
+	if err := json.Unmarshal(data, &list); err != nil {
+		return nil, fmt.Errorf("unmarshal brands: %w", err)
+	}
+	return list, nil
+}
+
+func (c *BrandCache) SetAll(ctx context.Context, list []model.Brand) error {
+	data, err := json.Marshal(list)
+	if err != nil {
+		return fmt.Errorf("marshal brands: %w", err)
+	}
+	return c.rdb.Set(ctx, brandAllKey, data, brandTTL).Err()
+}