fix session leak

core/email_queue.go

@@ -39,13 +39,13 @@ type SESClient struct {
 }
 
 const (
-	defaultExpiration = 5 * time.Minute
-	cleanupInterval   = 10 * time.Minute
+	emailRetryExpiration = 5 * time.Minute
+	sesCleanupInterval   = 10 * time.Minute
 )
 
 func NewSESClient() SESClient {
 	return SESClient{
-		ResetCache: cache.New(defaultExpiration, cleanupInterval),
+		ResetCache: cache.New(emailRetryExpiration, sesCleanupInterval),
 	}
 }
 
@@ -84,7 +84,7 @@ func (s *SESClient) SendEmail(email Email) error {
 		Source: aws.String(email.Sender),
 	}
 
-	if err = s.ResetCache.Add(email.Recipient, nil, defaultExpiration); err != nil {
+	if err = s.ResetCache.Add(email.Recipient, nil, emailRetryExpiration); err != nil {
 		return err
 	}