This release enhances service availability by introducing a configurable limit on concurrent connections to prevent overloads during request surges. Additionally, a critical bug has been resolved to allow for safe, dynamic updates to bandwidth throttling rules without service interruption.

### New Features
*   Introduced a server-side limit for concurrent connections to protect against request surges and ensure consistent performance. New requests are rejected with an HTTP 429 error when the `server.maxConnections` limit is reached. (#114)
    *   **Operational Impact**: API clients should be updated to handle HTTP 429 responses and implement backoff logic using the `Retry-After` header.

### Bug Fixes
*   Resolved a critical issue that caused a server crash when updating bandwidth throttling rules, ensuring uninterrupted operation during live configuration changes. This fix also includes enhanced error logging for offline backends to accelerate diagnostics. (#111)