The maximum number of streams that a single WebSocket can listen to

Websocket
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Hi,
According to the Binance Docs “A single connection can listen to a maximum of 200 streams.” But I’m listening to 391 pairs with one websocket and it is working. Should I comply with this condition and use 2 websocket for listening to 391 streams?

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Hi @Alaky_Dolaky,

The official Binance documentation states that a single WebSocket connection should handle no more than 200 streams. While it may appear to work for you at higher volumes without immediate issues, this is not guaranteed to remain stable or compliant long-term. The recommended best practice is to adhere to Binance’s guidelines to avoid unexpected throttling or disconnections in the future. Even if it works now, exceeding documented limits could lead to issues when market volatility increases or when Binance tightens enforcement.

What to do if you need more than 200 streams:

  1. Use multiple WebSocket connections: Split your pairs into batches of up to 200 streams each.
  2. Aggregate streams where possible: If you need a large number of pairs for a single endpoint (e.g., miniTicker), check if there’s a combined or “all symbols” stream to reduce the number of individual subscriptions.

Let us know if you have more questions!

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