Tair#

from langchain.embeddings.fake import FakeEmbeddings
from langchain.text_splitter import CharacterTextSplitter
from langchain.vectorstores import Tair
 

from langchain.document_loaders import TextLoader
loader = TextLoader('../../../state_of_the_union.txt')
documents = loader.load()
text_splitter = CharacterTextSplitter(chunk_size=1000, chunk_overlap=0)
docs = text_splitter.split_documents(documents)
 
embeddings = FakeEmbeddings(size=128)
 

export TAIR_URL="redis://{username}:{password}@{tair_address}:{tair_port}"
 

tair_url = "redis://localhost:6379"
 
# drop first if index already exists
Tair.drop_index(tair_url=tair_url)
 
vector_store = Tair.from_documents(
    docs,
    embeddings,
    tair_url=tair_url
)
 

query = "What did the president say about Ketanji Brown Jackson"
docs = vector_store.similarity_search(query)
docs[0]
 

Document(page_content='We’re going after the criminals who stole billions in relief money meant for small businesses and millions of Americans.    And tonight, I’m announcing that the Justice Department will name a chief prosecutor for pandemic fraud.   By the end of this year, the deficit will be down to less than half what it was before I took office.    The only president ever to cut the deficit by more than one trillion dollars in a single year.   Lowering your costs also means demanding more competition.   I’m a capitalist, but capitalism without competition isn’t capitalism.   It’s exploitation—and it drives up prices.   When corporations don’t have to compete, their profits go up, your prices go up, and small businesses and family farmers and ranchers go under.   We see it happening with ocean carriers moving goods in and out of America.   During the pandemic, these foreign-owned companies raised prices by as much as 1,000% and made record profits.', metadata={'source': '../../../state_of_the_union.txt'})