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> It is not uncommon for modern web frameworks to continuously hunt for file system changes and auto-reloads when run in single threaded or standalone mode. This functionality is superfluous if the application can respond to signals.

This is true if all that happens is a page reload, butamy frameworks are able to patch code or styles into the running page without a reload. This requires more than a signal handler.

Yeah this is a huge difference if what you're working on has state, being able to patch styles or modules makes development much smoother.

s/butamy/but many/

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