Language: Python · Sphere: programming · Category: Networking

Connection Manager with Pooling

A module that provides connection pooling functionality with health checks and thread-safe operations.

When it runs, connection pool guarantees pool.in_use_count == 3 and pool.available_count == 0; pool.available_count == 2 and pool.in_use_count == 1; len(granted) == 3 (proven by run).

Checkable constraints:

• len(granted) == 3
• conns[3] is None and conns[4] is None
• pool.in_use_count == 3 and pool.available_count == 0
• pool.return_connection(granted[0]) is True
• pool.return_connection(granted[1]) is True
• pool.available_count == 2 and pool.in_use_count == 1
• {re1.id, re2.id} == ids_returned
• pool.return_connection(foreign) is False

• Green-run: ✓ passes (re-run under the extractor's gate)
• Constraint strength: recovery (truth-pinned)
• Independent oracle: ✓ consensus — xlang (validator v1.9)
• Peer review: unreviewed

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