What does the livekit server use redis for?

LiveKit uses Redis as a shared data store and message bus in distributed, multi-node setups. It facilitates peer-to-peer routing, ensuring that clients joining a particular room connect to the same node. Redis is essential for communication between nodes, enabling them to be aware of the entire cluster and make routing decisions based on availability and load. This setup is recommended for redundancy and scalability in deployments. Would you like more detail on how Redis is integrated into LiveKit's architecture? Sources: - Distributed Setup | LiveKit Docs - LiveKit SFU Architecture 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@millions-hair-24956 Yes please

In LiveKit's architecture, Redis plays a crucial role in enabling distributed, multi-node setups. Here's a more detailed explanation of how Redis is integrated: 1. Shared Data Store and Message Bus: Redis acts as a central hub for storing room data and facilitating communication between nodes. This is essential for maintaining a consistent state across the cluster. 2. Peer-to-Peer Routing: Nodes use Redis to exchange information about their status and load. This allows LiveKit to make intelligent routing decisions, ensuring that clients are connected to the most appropriate node based on current conditions. 3. Cluster Awareness: Each node periodically reports its statistics to Redis. This enables nodes to be aware of the entire cluster's state, which is critical for balancing load and ensuring high availability. 4. Room Hosting: When a new room is created, the node that receives the request can use Redis to select an available node from the cluster to host the room. This helps in distributing the load evenly across the nodes. 5. Connection Draining: Redis is also involved in the process of connection draining, which allows nodes to gracefully shut down without disrupting active sessions. When a node is set to terminate, it enters a draining mode where it stops accepting new rooms but continues to serve existing ones until all participants have disconnected. 6. Multi-Region Support: In multi-region deployments, Redis helps in selecting nodes that are geographically closest to the user, reducing latency and improving the user experience. Overall, Redis is a key component in LiveKit's ability to scale horizontally and provide a resilient, low-latency communication platform. If you have more specific questions about Redis or any other aspect of LiveKit, feel free to ask! 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@millions-hair-24956 What happens to data like sip trunks when the livekit server and redis is restarted? does the data persisit?

It could be possible that SIP trunk data might not persist if the LiveKit server and Redis are restarted, as Redis is typically used as an in-memory data store. This means that unless Redis is configured to persist data to disk, any data stored in it, such as SIP trunks, could be lost upon restart. Would you like more information on how to configure Redis for data persistence or how to manage SIP trunk data in LiveKit? Sources: - https://docs.livekit.io/home/self-hosting/distributed/ Note: I wasn’t able to find highly relevant data sources, but above are a few potentially relevant links. 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.

@millions-hair-24956 Yeah, how can I make data persist?

I'm not able to find any data sources to answer your question. You might want to specify whether you're using Redis persistence features like RDB snapshots or AOF logs. If this doesn't help, please reach out to the Livekit support team for further assistance. 👍 0 button 👎 0 button 💡 Hint: Mention @runllm in the thread for followups.