Clever Geek Handbook

Spring Boot HTTP2 Server Push

Found a good example by Brian Clozel about HTTP / 2 and Spring Boot, especially with Server Push: https://github.com/bclozel/http2-experiments . There is index.html

one that has some image resources. However, these images are being pushed to the server, but I have no idea where exactly this push starts from. I don't see any push filters or other indicators that could cause the resources to be inside index.html

. Any ideas?

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Jetty is PushCacheFilter

set up here in this example.

PushCacheFilter

automatically "recognizes" which secondary resources are associated with any resource, and automatically nudges them.



This example also shows a way to programmatically push a resource . However, this API has been deprecated in favor of using PushBuilder

.

PushBuilder

will be part of Servlet 4.0, becoming a standard API.

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