How is the api data of aggregation technology obtained?

There is no official API, and data is obtained by simulating users to log in, crawl and parse HTML.

If there is an API, the background code of Zhihu can be reduced by 80%, which is basically the code that judges webpage errors or all kinds of incomplete information and retries at different frequencies (by experience).

In contrast, this column is much better, and at least one request returns JSON without complicated judgment.