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Redis-backed Entity Memory #2397

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alexiri
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@alexiri alexiri commented Apr 4, 2023

I wanted to be able to persist Entity Memory in a Redis database, so I abstracted ConversationEntityMemory to allow for pluggable Entity stores (d06f90d).

Then I implemented a Entity store that... erm... stores Entities in Redis. By default, Entities will expire from memory after 24 hours, but they'll be persisted for another 3 days every time they're recalled. The idea is to give the AIs a bit of a spaced-repetition memory, but I have yet to see if this is useful. The memory is partitioned by session_id (user ID? chat channel? whatever, really) so entities from one user don't leak to another.

While developing this, I did notice that the Entity summaries are kind of buggy (they summarize AI-generated content and not just information the human gave them, sometimes they add things like "No new information provided. Existing summary remains: As stated previously, X", etc.), but I'll tackle that later. First I wanted to get some input on this idea.

@hwchase17 hwchase17 changed the base branch from master to harrison/entity-store April 7, 2023 05:34
@hwchase17 hwchase17 merged commit 5e83016 into langchain-ai:harrison/entity-store Apr 7, 2023
dev2049 added a commit that referenced this pull request May 31, 2023
# SQLite-backed Entity Memory

Following the initiative of
#2397 I think it would be
helpful to be able to persist Entity Memory on disk by default

Co-authored-by: Dev 2049 <dev.dev2049@gmail.com>
vowelparrot pushed a commit that referenced this pull request May 31, 2023
# SQLite-backed Entity Memory

Following the initiative of
#2397 I think it would be
helpful to be able to persist Entity Memory on disk by default

Co-authored-by: Dev 2049 <dev.dev2049@gmail.com>
Undertone0809 pushed a commit to Undertone0809/langchain that referenced this pull request Jun 19, 2023
# SQLite-backed Entity Memory

Following the initiative of
langchain-ai#2397 I think it would be
helpful to be able to persist Entity Memory on disk by default

Co-authored-by: Dev 2049 <dev.dev2049@gmail.com>
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