def cacheops_stats(request):
if request.GET.get('reset'):
redis_client.delete('stats_models')
for key in redis_client.keys('cache_stats:*'):
redis_client.delete(key)
return redirect('cacheops_stats')
data = {}
graph_data = dict(zip(KEYS, [0, 0, 0]))
for model in redis_client.smembers('stats_models'):
total = dict(zip(KEYS[:2], [0, 0]))
values = {}
for i, k in enumerate(KEYS):
d = redis_client.hgetall('cache_stats:%s:%d' % (model, i))
if d:
values[k] = d
total[k] = sum(map(int, values[k].values()))
graph_data[k] += total[k]
total['total'] = sum(total.values())
data[model] = {'data': values}
data[model].update(total)
graph_data['total'] = sum(graph_data.values())
return render(request, 'cacheops/stats.html', {
'data_list': data, 'graph_data': graph_data
})
def invalidate_model(model):
"""
Invalidates all caches for given model.
NOTE: This is a heavy artilery which uses redis KEYS request,
which could be relatively slow on large datasets.
"""
set_key = 'conj:%s' % get_model_name(model)
conjs_keys = redis_client.smembers(set_key)
if isinstance(conjs_keys, str):
conjs_keys = conjs_keys.split()
if isinstance(conjs_keys, set):
conjs_keys = list(conjs_keys)
if conjs_keys:
cache_keys = redis_client.sunion(conjs_keys)
redis_client.delete(*(list(cache_keys) + conjs_keys))
for k in conjs_keys:
redis_client.srem(set_key, k)
# BUG: a race bug here, ignoring since invalidate_model() is not for hot production use
cache_schemes.clear(model)
def invalidate_model(model):
"""
Invalidates all caches for given model.
NOTE: This is a heavy artilery which uses redis KEYS request,
which could be relatively slow on large datasets.
"""
set_key = 'conj:%s' % get_model_name(model)
conjs_keys = redis_client.smembers(set_key)
if isinstance(conjs_keys, str):
conjs_keys = conjs_keys.split()
if isinstance(conjs_keys, set):
conjs_keys = list(conjs_keys)
if conjs_keys:
cache_keys = redis_client.sunion(conjs_keys)
redis_client.delete(*(list(cache_keys) + conjs_keys))
for k in conjs_keys:
redis_client.srem(set_key, k)
# BUG: a race bug here, ignoring since invalidate_model() is not for hot production use
cache_schemes.clear(model)