chore: sync submodule state (parent ref update)

Made-with: Cursor

gateway/go/cache/cache.go

@@ -0,0 +1,68 @@
+package cache
+
+import (
+	"context"
+	"encoding/json"
+	"time"
+
+	"github.com/go-redis/redis/v8"
+)
+
+type Cache struct {
+	client *redis.Client
+	ctx    context.Context
+}
+
+func New(redisURL string) (*Cache, error) {
+	opt, err := redis.ParseURL(redisURL)
+	if err != nil {
+		return nil, err
+	}
+
+	client := redis.NewClient(opt)
+	ctx := context.Background()
+
+	// Test connection
+	if err := client.Ping(ctx).Err(); err != nil {
+		return nil, err
+	}
+
+	return &Cache{
+		client: client,
+		ctx:    ctx,
+	}, nil
+}
+
+func (c *Cache) Get(key string) ([]byte, error) {
+	val, err := c.client.Get(c.ctx, key).Result()
+	if err == redis.Nil {
+		return nil, nil
+	}
+	if err != nil {
+		return nil, err
+	}
+	return []byte(val), nil
+}
+
+func (c *Cache) Set(key string, value []byte, ttl time.Duration) error {
+	return c.client.Set(c.ctx, key, value, ttl).Err()
+}
+
+func (c *Cache) Delete(key string) error {
+	return c.client.Del(c.ctx, key).Err()
+}
+
+func (c *Cache) InvalidatePattern(pattern string) error {
+	keys, err := c.client.Keys(c.ctx, pattern).Result()
+	if err != nil {
+		return err
+	}
+	if len(keys) > 0 {
+		return c.client.Del(c.ctx, keys...).Err()
+	}
+	return nil
+}
+
+func (c *Cache) Close() error {
+	return c.client.Close()
+}