def clear(self, key, participant_identifier):
try:
# Remove the direct entry
cache_key = COUNTER_CACHE_KEY % key
freq = Count.get(cache_key, participant_identifier)
Count.deletefield(cache_key, participant_identifier)
# Remove from the histogram
freq_cache_key = COUNTER_FREQ_CACHE_KEY % key
Count.next(freq_cache_key, freq, -1)
except:
# Handle Redis failures gracefully
pass
