community: Add support for Upstash Vector

docs/docs/modules/data_connection/indexing.ipynb

@@ -60,7 +60,7 @@
     "   * document addition by id (`add_documents` method with `ids` argument)\n",
     "   * delete by id (`delete` method with `ids` argument)\n",
     "\n",
-    "Compatible Vectorstores: `AnalyticDB`, `AstraDB`, `AwaDB`, `Bagel`, `Cassandra`, `Chroma`, `DashVector`, `DatabricksVectorSearch`, `DeepLake`, `Dingo`, `ElasticVectorSearch`, `ElasticsearchStore`, `FAISS`, `HanaDB`, `Milvus`, `MyScale`, `PGVector`, `Pinecone`, `Qdrant`, `Redis`, `ScaNN`, `SupabaseVectorStore`, `SurrealDBStore`, `TimescaleVector`, `Vald`, `Vearch`, `VespaStore`, `Weaviate`, `ZepVectorStore`.\n",
+    "Compatible Vectorstores: `AnalyticDB`, `AstraDB`, `AwaDB`, `Bagel`, `Cassandra`, `Chroma`, `DashVector`, `DatabricksVectorSearch`, `DeepLake`, `Dingo`, `ElasticVectorSearch`, `ElasticsearchStore`, `FAISS`, `HanaDB`, `Milvus`, `MyScale`, `PGVector`, `Pinecone`, `Qdrant`, `Redis`, `ScaNN`, `SupabaseVectorStore`, `SurrealDBStore`, `TimescaleVector`, `UpstashVectorStore`, `Vald`, `Vearch`, `VespaStore`, `Weaviate`, `ZepVectorStore`.\n",
     "  \n",
     "## Caution\n",
     "\n",

libs/community/langchain_community/vectorstores/__init__.py

@@ -422,6 +422,12 @@ def _import_typesense() -> Any:
     return Typesense
 
 
+def _import_upstash() -> Any:
+    from langchain_community.vectorstores.upstash import UpstashVectorStore
+
+    return UpstashVectorStore
+
+
 def _import_usearch() -> Any:
     from langchain_community.vectorstores.usearch import USearch
 
@@ -609,6 +615,8 @@ def __getattr__(name: str) -> Any:
         return _import_timescalevector()
     elif name == "Typesense":
         return _import_typesense()
+    elif name == "UpstashVectorStore":
+        return _import_upstash()
     elif name == "USearch":
         return _import_usearch()
     elif name == "Vald":
@@ -695,6 +703,7 @@ def __getattr__(name: str) -> Any:
     "Tigris",
     "TimescaleVector",
     "Typesense",
+    "UpstashVectorStore",
     "USearch",
     "Vald",
     "Vearch",