anchor.diff:  
       final minilist = await searchAndRenderMiniList(SearchOrder.top);
       pageContent = templateService.renderIndexPage(minilist, platform);
  -    await backend.uiPackageCache?.setUIIndexPage(platform, pageContent);
  +    if (isProd) {
  +      await backend.uiPackageCache?.setUIIndexPage(platform, pageContent);
  +    }
     }
     return htmlResponse(pageContent);
   }
  
positive.code:         AnalysisView analysis)) async {
    final Stopwatch sw = new Stopwatch()..start();
    String cachedPage;
    if (backend.uiPackageCache != null) {
      cachedPage =
          await backend.uiPackageCache.getUIPackagePage(packageName, versionName);
    }
  
negative.code:         analysisExtract,
          analysisView);
  
      if (isProd && backend.uiPackageCache != null) {
        await backend.uiPackageCache
            .setUIPackagePage(packageName, versionName, cachedPage);
      }
  