The cache implementation lacks thread safety. If multiple threads/requests access the same `CEODataBridge` instance concurrently, race conditions could occur:

[DYAI2025]

The cache implementation lacks thread safety. If multiple threads/requests access the same CEODataBridge instance concurrently, race conditions could occur:

1. Two threads could both find the cache expired and both trigger a refresh, wasting resources
2. One thread could be reading entry["data"] while another is modifying the cache structure
3. The time.time() checks could have TOCTOU (time-of-check-time-of-use) issues

If this class is used in a multi-threaded environment (e.g., FastAPI with multiple workers), consider adding thread synchronization (e.g., using threading.Lock) or document that instances should not be shared across threads.

Originally posted by @Copilot in #17 (comment)