What is the size and TTL for the shared (default) cache when it's not used?

[straut]

When the cache is never used (I might be using a cache I configured), what does the default cache use in the way of system resources? How much space does it occupy?

[#2]

TTL for the entries in default cache is 300 seconds --- I tested this on one my environments .

Regarding the size , pls find below my observations

#1. Total memory that we want to use for all caches though this will not be reserved . You will find this on Mps but I am not sure if this is being used .

# The total amount of memory that is usable for caching. The system will not # allow the user to configure a cache if the size of all the existing caches # together exceeds this amount #totalCacheMemorySizeKB=200056

#2 . I had 4 caches in my env + the default cache .

#3 . When I captured the heapdump on this env , I observed that only ~3MB was used by all the cache objects including the default which I never used.

#4 Further filtering I observed that the shallow + retained = ~ 3 kb for the default cache .