# Database optimization
<a name="advcost04"></a>


| ADVCOST04: How are you optimizing user profile storage, access, and replication? | 
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 User profile databases tend to be large ranging from 100-200 million to 5 billion user profiles and contain a wide range of data about users' online activities and interactions. Storage and Access to this data can increase cost. 

**Topics**
+ [ADVCOST04-BP01 Consider lower cost storage for older User Profile data](advcost04-bp01.md)
+ [ADVCOST04-BP02 Consider multi-level caching for user profile data](advcost04-bp02.md)
+ [ADVCOST04-BP03 Store profiles in a single Region and replicate asynchronously](advcost04-bp03.md)