respond stale cache if L1 cache has expired and origin backend is down

[estebanlartigue]

Hi, is there an out of the box stale cache for unhealthy system?

something that we can use whenever our L1 cache is expired and then the origin backend system is down ?

I saw in another question something like using a duplication of the response cache but without expiration time. is that a good thing? I thought L1 cache in apigee TTL are not super enforced since they are going to be removed when..... apigee needs the resource.

any thoughts here?

my goal would be

1. find out if apigee has the concept of "stale" cache use if error from backend is XYZ.

2. if not, what is the best way to produce this stale cache. is this having dups of cache with different TTL ?