A custom in-house solution powers Hashnode's content embedding infrastructure. It exposes a simple API consumed by various parts of our app, including blogs running on custom domains. However, soon after integrating the API, we noticed that the API r...

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It looks to me like I have to look deeper into the HTTP protocol. There are so many things I'm missing. This article is like a reminder. Great one.
Santosh C
You can add cache control headers as well for the clients to remember the decision for a long time.