Hi

Am 28.04.2016 um 23:08 schrieb Mike Youngstrom:

Here is another minor use case. My users are often confused that a
stopped app returns a 404 instead of a 503. So, we implement that
functionality for the user using an app mapped to wildcard routes that
constantly asks the CC for valid routes. This works for wildcard
domains but not one off domains.

It might be better if the router returned a 503. At least for routes
bound to apps. Not sure if this should extend to routes not bound to apps.

+1 for that proposal. A 404 also causes issues when crawler remove pages
from their index. A 503 has less side effects. I would also prefer a 503
service unavailable when a route is not bound - because there is no
service for this route. IMHO the meaning is much closer to what has
happended.

Stefan

Mike

On Thu, Apr 28, 2016 at 1:32 PM, Shannon Coen <scoen(a)pivotal.io
<mailto:scoen(a)pivotal.io>> wrote:

Hello Guillaume,

Thank you for sharing your thoughts on these use cases. I can see
how having
a route service field requests for an app, whether the app is up on not,
could be useful.

However, enabling this would significantly change how routes are
registered
for apps on Cloud Foundry, and how the router handles the route lookup.
Routes are not currently enabled in the routing tier unless they are
mapped
to an app, and only when the app is determined healthy.

You are proposing the router maintains routes which have no
backends, and
instead of a failed lookup determining whether a 404 is returned,
the router
should figure out whether a route has any backends or a route service.

I'll chew on your use case and keep my ear out for additional use
cases for
maintaining routes with no backends in the routing table.

Best,
Shannon



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