# stdout\_callback && fact\_caching = redis?

**URL:** <https://forum.ansible.com/t/stdout-callback-fact-caching-redis/30218>\
**Category:** Ansible Project\
**Created:** [April 30, 2019, 2:36am UTC](https://forum.ansible.com/t/stdout-callback-fact-caching-redis/30218 "2019-04-30T02:36:10Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![david.seddon](https://avatars.discourse-cdn.com/v4/letter/d/77aa72/32.png) [@david.seddon](https://forum.ansible.com/u/david.seddon)\
**Post date:** [April 30, 2019, 2:36am UTC](https://forum.ansible.com/t/stdout-callback-fact-caching-redis/30218/1 "2019-04-30T02:36:10Z")

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G’day,

With Ansible 2.5.9 is redis caching compatible with stdout\_callback please?

We find that redis caching really helps the performance, however it seems to be incompatible with “stdout\_callback = json”. When redis is enabled the json output is blank.

This results in blank output