Add support for puppeteer to facilitate crawling with information on anti-crawl pages; introduce cache module to avoid frequent crawling of pages

rsshub/extensions.py

@@ -1,8 +1,15 @@
 from flask_bootstrap import Bootstrap
 from flask_debugtoolbar import DebugToolbarExtension
 from flask_moment import Moment
+from flask_caching import Cache
 
 
 bootstrap = Bootstrap()
 debugtoolbar = DebugToolbarExtension()
 moment = Moment()
+
+cache = Cache(config={
+    "DEBUG": True,          # some Flask specific configs
+    "CACHE_TYPE": "simple",  # Flask-Caching related configs
+    "CACHE_DEFAULT_TIMEOUT": 3600  # cache half hour
+})