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3 changes: 3 additions & 0 deletions forest/drivers/__init__.py
Original file line number Diff line number Diff line change
Expand Up @@ -21,6 +21,9 @@ def _cache(f):
# Ensure per-server dataset instances
def wrapped(driver_name, settings=None):
uid = _uid(driver_name, settings)
import json

uid = json.dumps(uid)
if uid not in _CACHE:
_CACHE[uid] = f(driver_name, settings)
return _CACHE[uid]
Expand Down