tree ecdf6173be21dc4a106d7353237024b1f40ca2a0
parent a5edbe494c353809cabb1bd4cc50b971ea672f2e
author Clark Boylan <clark.boylan@gmail.com> 1401840085 -0700
committer Clark Boylan <clark.boylan@gmail.com> 1401842437 -0700

Cache zuul status.json for one second.

Serve previously rendered zuul status.json if it is was formatted less
than one second prior. This caches the status.json reducing expensive
calls to format the status.json.

The cache ttl is configurable using the zuul.status_expiry configuration
option in the zuul config.

Change-Id: Ib3fcd75f30bc4d4ef5f09d2adfd566d10c58a991