[GitHub] trafficserver issue #1575: 5xx response instead of stale content

[mlibbey <gi...@git.apache.org>]

GitHub user mlibbey opened an issue:

    https://github.com/apache/trafficserver/issues/1575

    5xx response instead of stale content

    Stale content should be used when available over general transient errors. However, once ATS gets a 5xx error, it will return the 5xx to the user instead of stale content.
    
    To reproduce: 
    - set up ats and an origin
    - get an object cached. Wait for the object to expire
    
    Then perform these tests:
    1) serve stale with origin unavailable:
    - fetch the object. 
    - you will (and should) get the stale object. 
    This is expected and desired behavior \U0001f44d 
    
    2) 5xx error case:
    - have the origin respond 502/504 (like a parent)... for the object
    - fetch the object-- you will get a 502-- you should get the stale object
    - turn off the origin and refetch-- you will still get the 502. 
    In these cases the via header will report hit-stale, so the object is still in cache, just isn't served. We expect a stale object instead of the transient error.


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[GitHub] trafficserver issue #1575: 5xx response instead of stale content

[mlibbey <gi...@git.apache.org>]

Github user mlibbey commented on the issue:

    https://github.com/apache/trafficserver/issues/1575
  
    - in whatever fix we do, should make sure that the CC:must-revalidate does return the 5xx error (eg, the must-revalidate does not allow for serving stale


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[GitHub] trafficserver issue #1575: 5xx response instead of stale content

[mlibbey <gi...@git.apache.org>]

Github user mlibbey closed the issue at:

    https://github.com/apache/trafficserver/issues/1575


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[GitHub] trafficserver issue #1575: 5xx response instead of stale content

[mlibbey <gi...@git.apache.org>]

Github user mlibbey commented on the issue:

    https://github.com/apache/trafficserver/issues/1575
  
    This is 
    proxy.config.http.negative_revalidating_enabled which is disabled by default.


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