Known Limitations
Listed below are known Dragonfly limitations:
- Each Dragonfly instance can handle up to two billion keys.
 - Lists, Sets and Hashes can contain up to two billion values.
 - The expiration limit for keys is 
2^28seconds, which is around 8 years. - Each command can contain up to 
2^16arguments (can be changed with themax_multi_bulk_lenflag). - Each argument can be up to 256MB bytes long.
 - String values are limited to a size of 256MB.