34 lines
No EOL
901 B
Python
34 lines
No EOL
901 B
Python
import json
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from django.core.cache import cache
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from django.core.exceptions import ObjectDoesNotExist
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from .models import User
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from .serializers import UserSerializer
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CACHE_TIMEOUT = 3600
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def get_cached_user_by_id(user_id):
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return _get_or_set_cache(f"user_{user_id}", user_id)
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def _get_or_set_cache(cache_key, user_id=None):
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cached_json = cache.get(cache_key)
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if cached_json:
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try:
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return json.loads(cached_json)
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except json.JSONDecodeError:
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cache.delete(cache_key)
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return _fetch_and_cache(cache_key, user_id)
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def _fetch_and_cache(cache_key, user_id):
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try:
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user = User.objects.get(id=user_id)
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except ObjectDoesNotExist:
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return None
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serializer = UserSerializer(user)
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user_data = serializer.data
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cache.set(cache_key, json.dumps(user_data), timeout=CACHE_TIMEOUT)
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return user_data |