Prod release #797
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Prod release #797
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This commit is a follow-up to Incident 152 (and 95).
Currently, the app fails with HTTP 5xx errors if the associated
Redis cache is unreachable or cannot be used.
This commit sets the `CACHEOPS_DEGRADE_ON_FAILURE` environment
variable to be `True`. This env var instructs django-cacheops
to wrap Redis calls in a try/except block and to handle
connection errors and timeout errors gracefully, by writing
a warning to the logs, rather than letting the relevant
exception propagate up the stack.
See:
https://github.com/Suor/django-cacheops#setup
https://github.com/Suor/django-cacheops/blob/master/cacheops/redis.py#L12-L22
…redis-failure Set CACHEOPS_DEGRADE_ON_FAILURE to True
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CACHEOPS_DEGRADE_ON_FAILUREtoTrueTesting
dalmatian service list-environment-variables -i nhsx-website -s web -e stagingREDIS_HOSTto something incorrectdalmatian service restart-containers -s web -e staging -i nhsx-websiteRuntimeWarning: The cacheops cache is unreachable!REDIS_HOSTback to it's previous value