[Minor] Fix cache key

diff --git a/lualib/lua_util.lua b/lualib/lua_util.lua
index 9fd15fa5a884e6490452cb284543af0c68109f31..521424966c73ae63285d20be5dbb5de6dd8e7aa6 100644 (file)
--- a/lualib/lua_util.lua
+++ b/lualib/lua_util.lua
@@ -951,10 +951,16 @@ exports.extract_specific_urls = function(params_or_task, lim, need_emails, filte
     if params.prefix then
       cache_key = params.prefix
     else
-      cache_key = string.format('sp_urls_%d%s%s%s', params.limit,
+      local cache_key_suffix
+      if params.flags then
+        cache_key_suffix = table.concat(params.flags) .. (params.flags_mode or '')
+      else
+        cache_key_suffix = string.format('%s%s%s',
           tostring(params.need_emails or false),
           tostring(params.need_images or false),
           tostring(params.need_content or false))
+      end
+      cache_key = string.format('sp_urls_%d%s', params.limit, cache_key_suffix)
     end
     local cached = params.task:cache_get(cache_key)