Currently, there is no provision to set the HTTP cache size. it can only be enabled or disabled using the httpCache setting in upstream. We want to enhance this functionality to allow users to set the cache size via an upstream setting.

Current Configuration:

@upstream(httpCache: true)

Expected Configuration:

@upstream(httpCache: 128)

The HTTP cache should be enabled only when the cache size is greater than 0; otherwise, it should be disabled.

Technical Requirements

• Implement the ability to set the HTTP cache size.
• Enable HTTP cache only when the specified size is greater than 0.
• Add unit tests wherever necessary to cover the new functionality.
• Update the website documentation to reflect the new usage of httpCache.