# aiohttp.client_exceptions.ClientOSError: [Errno 24] Too many open files

- **ID:** `python/aiohttp-connector-limit-exceeded`
- **Domain:** python
- **Category:** system_error
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

Too many concurrent connections exceed system file descriptor limit.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| 3.11 | active | — | — |

## Workarounds

1. **** (85% success)
   ```
   connector = aiohttp.TCPConnector(limit=100, limit_per_host=10) # tune values
   ```
2. **** (90% success)
   ```
   Ensure session.close() and response.release() are always called
   ```

## Dead Ends

- **** —  (50% fail)
- **** —  (40% fail)