Thanks. Typesense takes a different approach to indexing than Algolia.

a) While Algolia (from what is available publicly) has indices which are pre-sorted on a set of ranking factors, Typesense allows dynamic, on-the-fly sorting.

b) Also I believe Algolia memory maps their indices, but Typesense stores the raw JSON documents on-disk and constructs the index from scratch on start-up.