varnish - 6.5.1-1+deb11u3 main

Varnish Cache is a state of the art web accelerator written with
performance and flexibility in mind.
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Varnish Cache stores web pages in memory so web servers don't have to
create the same web page over and over again. Varnish serves pages
much faster than any application server; giving the website a
significant speed up.
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Some of the features include:
* A modern design
* VCL - a very flexible configuration language
* Load balancing with health checking of backends
* Partial support for ESI - Edge Side Includes
* URL rewriting
* Graceful handling of "dead" backends