Persisted Index Structures

[maxweriz]

Hey Eventual people, I'm curious if Daft keeps an index of a DataFrame after doing a filter operation for efficient future lookup. An example is I run the filtering functionally for some derived metric is that filtering operation run on every call of the frame filter or is it persisted in memory or storage in some serialized format? Having something like a full text or HNSW indexes would be examples for something like vector or text search.