Compress Field Names
Redis Hash consists of Fields and their values. Like values, field name also consumes memory, so it is required to keep in mind while assigning field names. If you have a large number of hashes with similar field names, the memory adds up significantly. To reduce memory usage, you can use smaller field names.
What do We Mean By Compress Field Names
Referring to the previous example in convert hashes to list, we had a hash having user details.
hmset user:123 id 123 firstname Bob lastname Lee location CA twitter bob_lee
In this case- firstname, lastname, location, twitter are all field names which could have been shortened to:
fn, ln, loc, etc. By doing this, you could have saved some memory that was been used by the field names.