docs(readme): Add object via CDN note on Caching section

becem-gharbi · Oct 5, 2023 · c27f24b · c27f24b
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diff --git a/README.md b/README.md
@@ -91,6 +91,8 @@ In order to cache Get object response, You can set caching rule on `/api/s3/quer
   },
 ```
 
+In order to directly retreive an object from the CDN, it should belong to a public bucket. The `key` can be extracted from the object's `url` via `getKey` function of `useS3Object`. Then the `publicURL` would be *{public_bucket_url}/{key}*
+
 ## Example
 
 ```vue