https://www.esfis.com/blogNotes on memory and retrieval.https://www.esfis.com/blog/introducing-esfishttps://www.esfis.com/blog/introducing-esfisTue, 08 Sep 2026 00:00:00 GMTOne local memory for every assistant you use. Why we built it, what it does today, and what we are deliberately not doing.https://www.esfis.com/blog/cascade-retrievalhttps://www.esfis.com/blog/cascade-retrievalWed, 26 Aug 2026 00:00:00 GMTVector search alone loses exact names and dates. Keyword search alone loses paraphrase. We run both, expand through the graph, and rerank. Here is what each stage buys.https://www.esfis.com/blog/memory-you-can-diffhttps://www.esfis.com/blog/memory-you-can-diffWed, 12 Aug 2026 00:00:00 GMTEvery change to your memory is a commit. Here is what that makes possible, from "what did I know in June" to undoing a bad import.https://www.esfis.com/blog/one-message-four-memorieshttps://www.esfis.com/blog/one-message-four-memoriesThu, 30 Jul 2026 00:00:00 GMTWhat extraction actually does to a paragraph, and why we split aggressively instead of storing whole messages.