Heroku announced support for HTTP/2 from browser to router, enabling multiplexing and stream prioritization for applications, thus enhancing performance.
The benefit of HTTP/2 is available on custom domains only, not on the default herokuapp.com domain, which is vital for leveraging improved speeds.
Setting up a custom domain on Heroku to utilize HTTP/2 involves minimal additional effort, making it accessible for developers looking to optimize their apps.
Deploying a simple SvelteKit application to Heroku required adjusting the package.json file, modifying devDependencies to dependencies, and updating the dev script.
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