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To ensure optimal performance for all users, Bunny Storage has limits on concurrent connections and uploads.

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Connection limits

LimitValueDescription
Concurrent Connections Per IP100-200Up to 200 connections allowed from a single IP address
Concurrent Connections Per Zone100Up to 100 concurrent connections allowed to upload to a single zone at the same time
Maximum FTP Connections Per IP25Maximum concurrent FTP connections from a single IP address

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How limits are applied

Limits are applied on a per-server basis. Each Bunny Storage region runs multiple servers, and each server tracks limits independently. In practice, this allows you to achieve much higher concurrency than the per-server limits suggest.

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Rate limit responses

When you reach a connection limit, further requests will be rejected with:
  • HTTP Status Code: 429 (Too Many Requests)
  • FTP Response: Connection refused
If this happens:
  1. Reduce concurrent connections
  2. Implement exponential backoff retry logic
  3. Distribute requests across longer time periods

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Durability and reliability

For information about data durability, redundancy, and reliability guarantees, see Durability.