The code, when running, can readily distinguish between them (e.g. for development vs. production) environments, say to run different libraries between each.

I use environment variables for that. You don't want the code to do autodetection based on the environment, because you benefit from having development/staging/production servers to be very similar.

A single body of code can be deployed, without change, and it will run appropriately in each case.

There are pre-made solutions for that, see Plack.

The code that does it is simple, reliable, self-evident

When dealing with different webserver environments? Surely you must be joking.

The best you can do is reuse well-test solutions. They can be reliable, and maybe their usage is simple, and evident from the documentation.

Perl 6 - second systems done right

In reply to Re: Best practices for distinguishing "development" from "production?" by moritz
in thread Best practices for distinguishing "development" from "production?" by locked_user sundialsvc4

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