How do I keep my customer data separate in Pinecone?

Some customer use cases require vectors to be segmented by their customers either physically or logically. The table below describes three techniques to accomplish this and the pros and cons of considering each. 

 

Technique	Pros	Cons
Separate Indexes Each customer would have a separate index	Customer data is truly separated physically by indexes	You cannot query across customers if you wish Cost and maintenance of several indexes
Namespaces You can isolate data within a single index using namespaces	You can only query one namespace at a time, which would keep customer data separate logically Cheaper than #1 potentially by making more efficient use of index storage	You cannot query across namespaces Customer data is only separated logically
Metadata Filtering All data is kept in a single index and logically separated by filtering at query time	Most versatile if you wish to query across customers As with namespaces cheaper than #1 potentially	Customer data is separated only by filtering at query time