cache: use badgerdb (#15)

cache/put.go

@@ -2,13 +2,17 @@ package cache
 
 import (
 	"fmt"
-	"github.com/xujiajun/nutsdb"
+	"github.com/dgraph-io/badger/v3"
 	"time"
 )
 
 func (c *Client) Put(bucket string, key string, val []byte, ttl time.Duration) error {
-	if err := c.db.Update(func(tx *nutsdb.Tx) error {
-		return tx.Put(bucket, []byte(key), val, uint32(ttl.Seconds()))
+	if err := c.db.Update(func(txn *badger.Txn) error {
+		e := badger.NewEntry([]byte(fmt.Sprintf("%s_%s", bucket, key)), val)
+		if ttl > 0 {
+			e = e.WithTTL(ttl)
+		}
+		return txn.SetEntry(e)
 	}); err != nil {
 		return fmt.Errorf("%v: %v; put: %w", bucket, key, err)
 	}