kovshenin
kovshenin

Reputation: 32622

What does _ah mean in Google App Engine?

Does the _ah mean anything in Google App Engine?

I'm not looking to find out what it's used for or where is it located and how it works. As some answers below mentioned it's a reserved path for admin stuff.

But the letters, a and h together, is it an abbreviation or something?

Upvotes: 43

Views: 8711

Answers (3)

systempuntoout
systempuntoout

Reputation: 74114

/_ah/ is a reserved URL path used by App Engine for features (mail, warmup, login, etc.) or administrative purposes.
Script handler and static file handler paths will never match this path.

Upvotes: 9

Joaquin Cuenca Abela
Joaquin Cuenca Abela

Reputation: 2605

It comes from apphosting, the underscore is to make it more difficult to collide with some user provided URL.

Edit: I worked at Google, apphosting was the first name they selected for AppEngine, and this name still remains in some parts of the internal configuration.

Upvotes: 84

Tom van Enckevort
Tom van Enckevort

Reputation: 4198

Maybe it's short for 'admin handler', but that's just a guess really.

Upvotes: 0

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