diff --git a/src/Jirafeau/a.php b/src/Jirafeau/a.php
index 65c40e1..2b113c0 100644
--- a/src/Jirafeau/a.php
+++ b/src/Jirafeau/a.php
@@ -230,12 +230,80 @@ function isKazArchive ($link) {
         jirafeau_escape ($link ['mime_type']) == T_ARCHIVE_MIME;
 }
 
+// ========================================
+function getArchiveCacheLastUpdate () {
+    if (file_exists (FILE_LAST_CACHE))
+        return intval (trim (file (FILE_LAST_CACHE)[0]));
+    return 0;
+}
+function setArchiveCacheLastUpdate ($time) {
+    if (!file_exists (VAR_CACHE))
+        mkdir (VAR_CACHE, 0755);
+    file_put_contents (FILE_LAST_CACHE, $time.NL);
+}
+function getArchiveCacheFromSender ($sender) {
+    $archives = [];
+    if (!file_exists (VAR_CACHE.$sender))
+        return $archives;
+    $dir = scandir (VAR_CACHE.$sender);
+    foreach ($dir as $hash) {
+        $p = s2p ($hash);
+        $lines = file (VAR_FILES . $p . $hash);
+        if (!$lines)
+            continue;
+        $archives [] = readArchiveFromLines ($lines);
+    }
+    return $archives;
+}
+
+function updateArchiveCacheUpTo ($period) {
+    if (!file_exists (VAR_CACHE))
+        mkdir (VAR_CACHE, 0755);
+    $minTime = getArchiveCacheLastUpdate ();
+    $maxTime = time ()-period2seconds ($period);
+
+    $stack = array (VAR_LINKS);
+    while ( ($d = array_shift ($stack)) && $d != null) {
+        $dir = scandir ($d);
+        foreach ($dir as $dirName) {
+            if (strcmp ($dirName, '.') == 0 || strcmp ($dirName, '..') == 0 ||
+                preg_match ('/\.tmp/i', "$dirName")) {
+                continue;
+            }
+            if (is_dir ($d . $dirName)) {
+                // Push new found directory.
+                $stack [] = $d . $dirName . '/';
+                continue;
+            }
+            $time = filemtime ($d . $dirName);
+            if ($time < $minTime || $time >= $maxTime)
+                continue;
+            // Read link informations.
+            $l = jirafeau_get_link ($dirName);
+            if (!count ($l))
+                continue;
+            if (!isKazArchive ($l))
+                continue;
+            $archiveInfo = readArchiveFromLink ($l);
+            if (!$archiveInfo [T_SENDER])
+                continue;
+            if (!file_exists (VAR_CACHE.$archiveInfo [T_SENDER]))
+                mkdir (VAR_CACHE.$archiveInfo [T_SENDER], 0755);
+            touch (VAR_CACHE.$archiveInfo [T_SENDER]."/".$l ['hash']);
+        }
+    }
+    setArchiveCacheLastUpdate ($maxTime);
+}
+
 // ========================================
 function readArchiveFromLink ($link) {
     $p = s2p ($link ['hash']);
     $lines = file (VAR_FILES . $p . $link ['hash']);
-    $archive = readArchiveFromLines ($lines);
-    return $archive;
+    if ($lines)
+        return readArchiveFromLines ($lines);
+    global $message;
+    $message .= "can't read {$linkName}".NL;
+    return [];
 }
 function readArchiveFromLines ($lines) {
     $archive = [];
@@ -383,6 +451,8 @@ function deleteAction ($linkName) {
     $fileName = $linkName;
     $fileLink = $link;
     $fileTime = $fileLink ['upload_date'];
+
+    // XXX
     $stack = array (VAR_LINKS);
     while (($d = array_shift ($stack)) && $d != null) {
         if (!file_exists ($d))
@@ -711,40 +781,17 @@ if (isset ($_REQUEST [A_ACTION])) {
         setSenderLang ($sender, $matches [1]);
         $message .= "Votre lang &agrave; &eacute;t&eacute; mise &agrave; jour.";
         break;
+
+    case preg_match ("/^".A_CACHE."(".implode ("|", array_keys ($periodText)).")$/i", $_REQUEST [A_ACTION], $matches):
+        updateArchiveCacheUpTo ($matches [1]);
+        $message .= "Cache mise &agrave; jour {$matches [1]}.";
+        break;
     }
 }
 
 // list
-$archives = [];
-$stack = array (VAR_LINKS);
-while ( ($d = array_shift ($stack)) && $d != null) {
-    $dir = scandir ($d);
-    foreach ($dir as $dirName) {
-        if (strcmp ($dirName, '.') == 0 || strcmp ($dirName, '..') == 0 ||
-            preg_match ('/\.tmp/i', "$dirName")) {
-            continue;
-        }
-        if (is_dir ($d . $dirName)) {
-            /* Push new found directory. */
-            $stack [] = $d . $dirName . '/';
-            continue;
-        }
-        /* Read link informations. */
-        $l = jirafeau_get_link ($dirName);
-        if (!count ($l))
-            continue;
-        if (!isKazArchive ($l))
-            continue;
-        $archiveInfo = readArchiveFromLink ($l);
-        if ($sender != $archiveInfo [T_SENDER])
-            continue;
-        $archiveInfo ['link'] = $dirName;
-        $archiveInfo ['key'] = $l ['key'];
-        $archiveInfo ['maxtime'] = $l ['time'];
-        $archiveInfo ['hash'] = $l ['hash'];
-        $archives [] = $archiveInfo;
-    }
-}
+$archives = getArchiveCacheFromSender ($sender);
+
 displayHeadPage ("Gestion des pièces jointes");
 echo str_replace (["___SENDER___", "___ADMIN___", "___DATE___"],
                   [$sender, ($admin ? " (admin)" : ""), jirafeau_get_datetimefield (time ())],
@@ -853,6 +900,21 @@ echo
     '<button type="submit">'.M_REFRESH.'</button>'.
     ' la page.</form>';
 
+if ($admin) {
+    echo
+        '<form method="post">'.
+        'Mettre &agrave; jour le cache jusqu\'&agrave; '.
+        '<input type="hidden" name="'.A_SENDER.'" value="'.$sender.'"/>'.
+        '<input type="hidden" name="'.A_TOKEN.'" value="'.$token.'"/>'.
+        '<select name="'.A_ACTION.'" style="width: auto !important;">';
+    foreach ($periodText as $item => $text)
+        echo '  <option value="'.A_CACHE.$item.'">'.$text.'</option>';
+    echo
+        '</select> '.
+        '<button type="submit">'."valider".'</button>'.
+        '.</form><br/>';
+}
+
 $userSise = 0;
 $userTab = [];
 if ($archives) {
diff --git a/src/Jirafeau/lib/template/page.php b/src/Jirafeau/lib/template/page.php
index ff177f9..a8a5757 100644
--- a/src/Jirafeau/lib/template/page.php
+++ b/src/Jirafeau/lib/template/page.php
@@ -115,7 +115,7 @@
   <div class="table">
     <form class="tr" action="<?php echo $_SERVER ['SCRIPT_NAME']; ?>" method="POST">
       <span class="td"></span>
-      <span class="td"><input name="<?php echo A_NAME;?>" type="text" value="<?php echo $name;?>" placeholder="Mon nuage"/></span>
+      <span class="td"><input name="<?php echo A_NAME;?>" type="text" value="<?php echo $name;?>" placeholder="Nom du nuage"/></span>
       <span class="td"><input name="<?php echo A_URL;?>" type="text" value="<?php echo $url;?>" placeholder="https://..."/></span>
       <?php echo getHiddenToken (); ?><?php echo getHiddenLink (); ?>
       <span class="td"><button class="btn btn-new" onclick="actionUrl (this, false, '<?php echo A_ACTION; ?>', '<?php echo T_ADD_URL; ?>')" ><?php echo L_ADD_URL; ?></button></span>