Is there a benefit of using page blobs instead of block blobs if only performing random reads?

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Yes, there is a benefit of using page blobs instead of block blobs if only performing random reads. Page blobs are specifically designed for random access scenarios, where only a portion of the data needs to be accessed frequently. They have the ability to read and write individual pages without having to retrieve or upload the entire blob. This makes them more efficient for scenarios that require frequent access to only certain parts of the data.

In contrast, block blobs are designed for scenarios where the entire blob is accessed or modified frequently, such as video or image files. Although block blobs can support random reads, they are not optimized for this use case and may be less efficient than page blobs.

Therefore, if you only need to perform random reads on a blob and don't require frequent access to the entire blob, using page blobs would be the better choice.