Elasticsearch

Elasticsearch is a distributed, RESTful search and analytics engine. It provides a distributed, multi-tenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents.

Installation and Setup

There are two ways to get started with Elasticsearch:

Install Elasticsearch on your local machine via docker

Example: Run a single-node Elasticsearch instance with security disabled. This is not recommended for production use.

    docker run -p 9200:9200 -e "discovery.type=single-node" -e "xpack.security.enabled=false" -e "xpack.security.http.ssl.enabled=false" docker.elastic.co/elasticsearch/elasticsearch:8.9.0

Deploy Elasticsearch on Elastic Cloud

Elastic Cloud is a managed Elasticsearch service. Signup for a free trial.

Install Client

pip install elasticsearch
pip install langchain-elasticsearch

Embedding models

See a usage example.

from langchain_elasticsearch.embeddings import ElasticsearchEmbeddings

API Reference:

• ElasticsearchEmbeddings

Vector store

See a usage example.

from langchain_elasticsearch.vectorstores import ElasticsearchStore

API Reference:

• ElasticsearchStore

Memory

See a usage example.

from langchain_elasticsearch.chat_history import ElasticsearchChatMessageHistory

API Reference:

• ElasticsearchChatMessageHistory