flask-cache memoize URL query string parameters as well

You can use flask-caching:

Continuation of the Flask-Cache Extension

With which you can do something like this:

@app.route("https://stackoverflow.com/")
@cache.cached(timeout=10, query_string=True)
def index():
    return render_template('index.html')

Docs from source code:

:param query_string: Default False. When True, the cache key
                     used will be the result of hashing the
                     ordered query string parameters. This
                     avoids creating different caches for
                     the same query just because the parameters
                     were passed in a different order. See
                     _make_cache_key_query_string() for more
                     details.