fix: change cache strategy of 色花堂 (#4088)

lib/routes/dsndsht23/index.js

@@ -97,7 +97,7 @@ module.exports = async (ctx) => {
                     $(images[k]).replaceWith(`<img src="${$(images[k]).attr('file')}" />`);
                 }
             }
-            const description = (postMessage.html() || '原帖已被删除').replace(/ignore_js_op/g, 'div');
+            const description = (postMessage.html() || '抓取原帖失败').replace(/ignore_js_op/g, 'div');
             const enclosureUrl = postMessage.find('div.blockcode li').text();
 
             const single = {
@@ -108,7 +108,9 @@ module.exports = async (ctx) => {
                 enclosure_url: enclosureUrl,
                 enclosure_type: 'application/x-bittorrent',
             };
-            ctx.cache.set(itemUrl, JSON.stringify(single));
+            if (description !== '抓取原帖失败') {
+                ctx.cache.set(itemUrl, JSON.stringify(single));
+            }
             return Promise.resolve(single);
         })
     );