Getting Started with FalkorDB

This guide will walk you through setting up FalkorDB, modeling a social network as a graph, and accessing it using the FalkorDB Python client with Cypher.

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Prerequisites

1. FalkorDB Instance: Set up FalkorDB (on-prem or cloud).
   • Run FalkorDB Docker
   • Create a FalkorDB Cloud Instance
2. Install FalkorDB Client:

python javascript rust java

pip install falkordb

npm install falkordb

cargo add falkordb

  <dependencies>
    <dependency>
      <groupId>com.falkordb</groupId>
      <artifactId>jfalkordb</artifactId>
      <version>0.4.0</version>
    </dependency>
  </dependencies>

---

Step 1: Model a Social Network as a Graph

Let’s create a simple graph for a social network where:

• Nodes represent User and Post.
• Relationships connect Users with a FRIENDS_WITH relationship, and Users are connected via a CREATED relationship to Posts

Graph Schema

Node Type	Properties
User	id, name, email
Post	id, content, date

Relationship Type	Start Node	End Node	Properties
FRIENDS_WITH	User	User	since
CREATED	User	Post	time

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Step 2: Load Data into FalkorDB

Here’s how you can model and load the data.

Cypher Query to Create the Data

You can execute these commands using the FalkorDB Python client or any supported client.

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Step 3: Access Your Data

Connect to FalkorDB

python javascript rust java

from falkordb import FalkorDB

# Connect to FalkorDB
client = FalkorDB(host="localhost", port=6379, password="your-password")
graph = client.select_graph('social')

import { FalkorDB } from 'falkordb';

const client = await FalkorDB.connect({
  host: "localhost",
  port: 6379,
  password: "your-password"
});
const graph = client.selectGraph('social');

use falkordb::{FalkorClientBuilder, FalkorConnectionInfo};

// Connect to FalkorDB
let connection_info: FalkorConnectionInfo = "falkor://127.0.0.1:6379".try_into()
            .expect("Invalid connection info");

let client = FalkorClientBuilder::new()
           .with_connection_info(connection_info)
           .build()
           .expect("Failed to build client");

// Select the social graph
let mut graph = client.select_graph("social");

package com.myproject;

import com.falkordb.*;

Driver driver = FalkorDB.driver("localhost", 6379);
Graph graph = driver.graph("social");

Execute Cypher Queries

Create the Graph

python javascript rust java

create_query = """
CREATE (alice:User {id: 1, name: "Alice", email: "alice@example.com"})
CREATE (bob:User {id: 2, name: "Bob", email: "bob@example.com"})
CREATE (charlie:User {id: 3, name: "Charlie", email: "charlie@example.com"})

CREATE (post1:Post {id: 101, content: "Hello World!", date: 1701388800})
CREATE (post2:Post {id: 102, content: "Graph Databases are awesome!", date: 1701475200})

CREATE (alice)-[:FRIENDS_WITH {since: 1640995200}]->(bob)
CREATE (bob)-[:FRIENDS_WITH {since: 1684108800}]->(charlie)
CREATE (alice)-[:CREATED {time: 1701388800}]->(post1)
CREATE (bob)-[:CREATED {time: 1701475200}]->(post2)
"""

graph.query(create_query)
print("Graph created successfully!")

const createQuery = `
CREATE (alice:User {id: 1, name: "Alice", email: "alice@example.com"})
CREATE (bob:User {id: 2, name: "Bob", email: "bob@example.com"})
CREATE (charlie:User {id: 3, name: "Charlie", email: "charlie@example.com"})

CREATE (post1:Post {id: 101, content: "Hello World!", date: 1701388800})
CREATE (post2:Post {id: 102, content: "Graph Databases are awesome!", date: 1701475200})

CREATE (alice)-[:FRIENDS_WITH {since: 1640995200}]->(bob)
CREATE (bob)-[:FRIENDS_WITH {since: 1684108800}]->(charlie)
CREATE (alice)-[:CREATED {time: 1701388800}]->(post1)
CREATE (bob)-[:CREATED {time: 1701475200}]->(post2)
`;

let result = await graph.query(createQuery);
console.log("Graph created successfully!");

let create_query = r#"
CREATE (alice:User {id: 1, name: \"Alice\", email: \"alice@example.com\"})
CREATE (bob:User {id: 2, name: \"Bob\", email: \"bob@example.com\"})
CREATE (charlie:User {id: 3, name: \"Charlie\", email: \"charlie@example.com\"})

CREATE (post1:Post {id: 101, content: \"Hello World!\", date: 1701388800})
CREATE (post2:Post {id: 102, content: \"Graph Databases are awesome!\", date: 1701475200})

CREATE (alice)-[:FRIENDS_WITH {since: 1640995200}]->(bob)
CREATE (bob)-[:FRIENDS_WITH {since: 1684108800}]->(charlie)
CREATE (alice)-[:CREATED {time: 1701388800}]->(post1)
CREATE (bob)-[:CREATED {time: 1701475200}]->(post2)
"#;

graph.query(create_query).execute().await?;
println!("Graph created successfully!");

String createQuery = 
"CREATE (alice:User {id: 1, name: \"Alice\", email: \"alice@example.com\"}) " +
"CREATE (bob:User {id: 2, name: \"Bob\", email: \"bob@example.com\"}) " +
"CREATE (charlie:User {id: 3, name: \"Charlie\", email: \"charlie@example.com\"}) " +

"CREATE (post1:Post {id: 101, content: \"Hello World!\", date: 1701388800}) " +
"CREATE (post2:Post {id: 102, content: \"Graph Databases are awesome!\", date: 1701475200}) " +

"CREATE (alice)-[:FRIENDS_WITH {since: 1640995200}]->(bob) " +
"CREATE (bob)-[:FRIENDS_WITH {since: 1684108800}]->(charlie) " +
"CREATE (alice)-[:CREATED {time: 1701388800}]->(post1) " +
"CREATE (bob)-[:CREATED {time: 1701475200}]->(post2)";

ResultSet resultSet = graph.query(createQuery);
System.out.println("Graph created successfully!");

Query the Graph

python javascript rust java

# Find all friends of Alice
query = """
MATCH (alice:User {name: 'Alice'})-[:FRIENDS_WITH]->(friend)
RETURN friend.name AS Friend
"""

result = graph.ro_query(query).result_set

print("Alice's friends:")
for record in result:
    print(record[0])

const query = `
MATCH (alice:User {name: "Alice"})-[:FRIENDS_WITH]->(friend)
RETURN friend.name AS Friend
`;
const result = await graph.ro_query(query);
console.log("Alice's friends:");
for (const record of result) {
  console.log(record["Friend"]);
}

let query = r#"
MATCH (alice:User {name: \"Alice\"})-[:FRIENDS_WITH]->(friend)
RETURN friend.name AS Friend
"#;
let result = graph.ro_query(query).execute().await?;

println!("Alice's friends:");
for record in result.data.by_ref() {
    println!("{}", record["Friend"]);
}

String query = """
MATCH (alice:User {name: \"Alice\"})-[:FRIENDS_WITH]->(friend)
RETURN friend.name AS Friend
""";
ResultSet result = graph.readOnlyQuery(query);
System.out.println("Alice's friends:");
for (Record record : result) {
    System.out.println(record.get("Friend"));
}

Query Relationships

python javascript rust java

# Find posts created by Bob
query = """
MATCH (bob:User {name: 'Bob'})-[:CREATED]->(post:Post)
RETURN post.content AS PostContent
"""

result = graph.ro_query(query).result_set

print("Posts created by Bob:")
for record in result:
    print(record[0])

const query = `
MATCH (bob:User {name: "Bob"})-[:CREATED]->(post:Post)
RETURN post.content AS PostContent
`;
const result = await graph.ro_query(query);
console.log("Posts created by Bob:");
for (const record of result) {
  console.log(record["PostContent"]);
}

let query = r#"
MATCH (bob:User {name: \"Bob\"})-[:CREATED]->(post:Post)
RETURN post.content AS PostContent
"#;
let result = graph.ro_query(query).execute().await?;
println!("Posts created by Bob:");
for record in result.data.by_ref() {
    println!("{}", record["PostContent"]);
}

String query = """
MATCH (bob:User {name: \"Bob\"})-[:CREATED]->(post:Post)
RETURN post.content AS PostContent
""";
ResultSet result = graph.readOnlyQuery(query);
System.out.println("Posts created by Bob:");
for (Record record : result) {
    System.out.println(record.get("PostContent"));
}

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Step 4: Explore Further

Congratulations! 🎉 You have successfully modeled, loaded, and queried a social network graph with FalkorDB.

Next, dive deeper into FalkorDB’s powerful features:

• Advanced Cypher
• Database Operations
• GraphRAG SDK
• LLM Framework Integrations

For questions or support, visit our community forums