diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 9a9a347..d3a3de4 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -5,15 +5,6 @@
   </component>
   <component name="ChangeListManager">
     <list default="true" id="18dd0d68-b4b8-40db-9734-9119b5c848bd" name="更改" comment=":recycle: Moved onto dealer">
-      <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/go.mod" beforeDir="false" afterPath="$PROJECT_DIR$/go.mod" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/go.sum" beforeDir="false" afterPath="$PROJECT_DIR$/go.sum" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/gap/client.go" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/gap/server.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/gap/server.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/server/exts/auth.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/server/exts/auth.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/services/auth.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/internal/services/auth.go" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/internal/services/jwt.go" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/pkg/main.go" beforeDir="false" afterPath="$PROJECT_DIR$/pkg/main.go" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/settings.toml" beforeDir="false" afterPath="$PROJECT_DIR$/settings.toml" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
@@ -54,7 +45,7 @@
     "RunOnceActivity.go.migrated.go.modules.settings": "true",
     "RunOnceActivity.go.modules.automatic.dependencies.download": "true",
     "RunOnceActivity.go.modules.go.list.on.any.changes.was.set": "true",
-    "git-widget-placeholder": "refactor/dealer",
+    "git-widget-placeholder": "features/calc-in-backend",
     "go.import.settings.migrated": "true",
     "go.sdk.automatically.set": "true",
     "last_opened_file_path": "/Users/littlesheep/Documents/Projects/Hydrogen/Paperclip/pkg/internal/grpc",
diff --git a/pkg/internal/server/api/attachments_api.go b/pkg/internal/server/api/attachments_api.go
index af5f15a..66df753 100644
--- a/pkg/internal/server/api/attachments_api.go
+++ b/pkg/internal/server/api/attachments_api.go
@@ -96,6 +96,7 @@ func createAttachment(c *fiber.Ctx) error {
 	_ = jsoniter.UnmarshalFromString(c.FormValue("metadata"), &usermeta)
 
 	tx := database.C.Begin()
+
 	metadata, err := services.NewAttachmentMetadata(tx, user, file, models.Attachment{
 		Usage:       usage,
 		Alternative: c.FormValue("alt"),
diff --git a/pkg/internal/services/analyzer.go b/pkg/internal/services/analyzer.go
index d1160e8..2a269d4 100644
--- a/pkg/internal/services/analyzer.go
+++ b/pkg/internal/services/analyzer.go
@@ -9,6 +9,7 @@ import (
 	"os"
 	"path/filepath"
 	"strings"
+	"time"
 
 	"git.solsynth.dev/hydrogen/paperclip/pkg/internal/database"
 	"git.solsynth.dev/hydrogen/paperclip/pkg/internal/models"
@@ -30,8 +31,11 @@ func PublishAnalyzeTask(file models.Attachment) {
 func StartConsumeAnalyzeTask() {
 	for {
 		task := <-fileAnalyzeQueue
+		start := time.Now()
 		if err := AnalyzeAttachment(task); err != nil {
 			log.Error().Err(err).Any("task", task).Msg("A file analyze task failed...")
+		} else {
+			log.Info().Dur("elapsed", time.Since(start)).Any("task", task).Msg("A file analyze task was completed.")
 		}
 	}
 }
@@ -48,8 +52,8 @@ func AnalyzeAttachment(file models.Attachment) error {
 	_ = jsoniter.Unmarshal(rawDest, &dest)
 
 	dst := filepath.Join(dest.Path, file.Uuid)
-	if _, err := os.Stat(dst); !os.IsExist(err) {
-		return fmt.Errorf("attachment doesn't exists in temporary storage")
+	if _, err := os.Stat(dst); os.IsNotExist(err) {
+		return fmt.Errorf("attachment doesn't exists in temporary storage: %v", err)
 	}
 
 	if t := strings.SplitN(file.MimeType, "/", 2)[0]; t == "image" {
@@ -85,7 +89,7 @@ func AnalyzeAttachment(file models.Attachment) error {
 	if linked && err != nil {
 		return fmt.Errorf("unable to link file record: %v", err)
 	} else if !linked {
-		if err := tx.Save(&file); err != nil {
+		if err := tx.Save(&file).Error; err != nil {
 			tx.Rollback()
 			return fmt.Errorf("unable to save file record: %v", err)
 		}
@@ -116,13 +120,12 @@ func HashAttachment(file models.Attachment) (hash string, err error) {
 	_ = jsoniter.Unmarshal(rawDest, &dest)
 
 	dst := filepath.Join(dest.Path, file.Uuid)
-	if _, err = os.Stat(dst); !os.IsExist(err) {
-		err = fmt.Errorf("attachment doesn't exists in temporary storage")
+	if _, err = os.Stat(dst); os.IsNotExist(err) {
+		err = fmt.Errorf("attachment doesn't exists in temporary storage: %v", err)
 		return
 	}
-
 	var in *os.File
-	in, err = os.Open("file.txt")
+	in, err = os.Open(dst)
 	if err != nil {
 		err = fmt.Errorf("unable to open file: %v", err)
 		return
diff --git a/pkg/internal/services/recycler.go b/pkg/internal/services/recycler.go
index bc92e10..c9362ca 100644
--- a/pkg/internal/services/recycler.go
+++ b/pkg/internal/services/recycler.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"time"
 
 	"git.solsynth.dev/hydrogen/paperclip/pkg/internal/models"
 	jsoniter "github.com/json-iterator/go"
@@ -23,8 +24,11 @@ func PublishDeleteFileTask(file models.Attachment) {
 func StartConsumeDeletionTask() {
 	for {
 		task := <-fileDeletionQueue
+		start := time.Now()
 		if err := DeleteFile(task); err != nil {
 			log.Error().Err(err).Any("task", task).Msg("A file deletion task failed...")
+		} else {
+			log.Info().Dur("elapsed", time.Since(start)).Any("task", task).Msg("A file deletion task was completed.")
 		}
 	}
 }
diff --git a/pkg/internal/services/uploader.go b/pkg/internal/services/uploader.go
index 5f27dd4..e4405fd 100644
--- a/pkg/internal/services/uploader.go
+++ b/pkg/internal/services/uploader.go
@@ -53,17 +53,19 @@ func ReUploadFileToPermanent(meta models.Attachment) error {
 	prevRawDest, _ := jsoniter.Marshal(prevDestMap)
 	_ = jsoniter.Unmarshal(prevRawDest, &prevDest)
 
-	in, err := os.Open(filepath.Join(prevDest.Path, meta.Uuid))
-	if err != nil {
-		return fmt.Errorf("unable to open file in temporary storage: %v", err)
-	}
-	defer in.Close()
+	inDst := filepath.Join(prevDest.Path, meta.Uuid)
 
 	switch dest.Type {
 	case models.DestinationTypeLocal:
 		var destConfigured models.LocalDestination
 		_ = jsoniter.Unmarshal(rawDest, &destConfigured)
 
+		in, err := os.Open(inDst)
+		if err != nil {
+			return fmt.Errorf("unable to open file in temporary storage: %v", err)
+		}
+		defer in.Close()
+
 		out, err := os.Create(filepath.Join(destConfigured.Path, meta.Uuid))
 		if err != nil {
 			return fmt.Errorf("unable to open dest file: %v", err)
@@ -79,11 +81,6 @@ func ReUploadFileToPermanent(meta models.Attachment) error {
 		var destConfigured models.S3Destination
 		_ = jsoniter.Unmarshal(rawDest, &destConfigured)
 
-		buffer := bytes.NewBuffer(nil)
-		if _, err := io.Copy(buffer, in); err != nil {
-			return fmt.Errorf("create io reader for upload file: %v", err)
-		}
-
 		client, err := minio.New(destConfigured.Endpoint, &minio.Options{
 			Creds:  credentials.NewStaticV4(destConfigured.SecretID, destConfigured.SecretKey, ""),
 			Secure: destConfigured.EnableSSL,
@@ -92,8 +89,10 @@ func ReUploadFileToPermanent(meta models.Attachment) error {
 			return fmt.Errorf("unable to configure s3 client: %v", err)
 		}
 
-		_, err = client.PutObject(context.Background(), destConfigured.Bucket, filepath.Join(destConfigured.Path, meta.Uuid), buffer, -1, minio.PutObjectOptions{
-			ContentType: meta.MimeType,
+		_, err = client.FPutObject(context.Background(), destConfigured.Bucket, filepath.Join(destConfigured.Path, meta.Uuid), inDst, minio.PutObjectOptions{
+			ContentType:          meta.MimeType,
+			SendContentMd5:       false,
+			DisableContentSha256: true,
 		})
 		if err != nil {
 			return fmt.Errorf("unable to upload file to s3: %v", err)
@@ -128,8 +127,10 @@ func UploadFileToS3(config models.S3Destination, file *multipart.FileHeader, met
 		return fmt.Errorf("unable to configure s3 client: %v", err)
 	}
 
-	_, err = client.PutObject(context.Background(), config.Bucket, filepath.Join(config.Path, meta.Uuid), buffer, -1, minio.PutObjectOptions{
-		ContentType: meta.MimeType,
+	_, err = client.PutObject(context.Background(), config.Bucket, filepath.Join(config.Path, meta.Uuid), buffer, file.Size, minio.PutObjectOptions{
+		ContentType:          meta.MimeType,
+		SendContentMd5:       false,
+		DisableContentSha256: true,
 	})
 	if err != nil {
 		return fmt.Errorf("unable to upload file to s3: %v", err)