--- lbbs/include/article_cache.h	2025/11/04 14:58:55	1.10
+++ lbbs/include/article_cache.h	2026/01/03 10:27:14	1.12
@@ -3,7 +3,7 @@
  * article_cache
  *   - convert article content from DB to local cache with LML conversion and line offset index
  *
- * Copyright (C) 2004-2025  Leaflet <leaflet@leafok.com>
+ * Copyright (C) 2004-2026  Leaflet <leaflet@leafok.com>
  */
 
 #ifndef _ARTICLE_CACHE_H_
@@ -13,6 +13,11 @@
 #include "section_list.h"
 #include "str_process.h"
 
+enum article_cache_constant_t
+{
+	ARTICLE_CONTENT_MAX_LEN = 1024 * 1024 * 4, // 4MB
+};
+
 struct article_cache_t
 {
 	void *p_mmap;