Are you running object cache like memcached.
Upload the entire debug-bar-cache-lookup directory to the wp-content plugins directory..
Activate Debug Bar Cache Lookup through 'Plugins WordPress..
When you activate Debug Bar plugin, 'Cache Lookup will be added to debug menu...
Sometimes there are times when you need to verify that object is being cached..
Instead of using WP CLI or other tools, you can look it up from within Debug Bar...
Debug Bar Cache Lookup is open software.
The following people have contributed to this plugin..
Browse the code, check out SVN repository, or subscribe to the development log by RSS...
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