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我使用Django爲了從一個大圖像堆棧(每個大約150mb)動態生成圖像來存檔網頁。它假設是交互式的,所以我需要保持緩存選定的堆棧。爲此,我使用了memcached緩存後端和「django.contrib.sessions.backends.cache」會話引擎。使用Django緩存大量數據時發生內存錯誤
問題是,當我使用會話數據呈現頁面時,我不斷收到MemoryError。 這是更有效的方法嗎? 我認爲這是數據大小的問題。無論如何增加內存大小?解決這個問題的另一種方法
在views.py
def images(request):
if request.method == 'POST':
info_form = InfoForm(request.POST)
if (info_form.is_valid()):
if selected_stack_changed:
matrix = get_matrix(stack_id)
request.session['matrix'] = matrix
else:
matrix = request.session['matrix']
return render(request, url)
在settings.py
CACHES = {
'default': {
'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache',
'LOCATION': '127.0.0.1:11211',
}
}
SESSION_ENGINE = "django.contrib.sessions.backends.cache"
這裏完整的錯誤我得到:
Internal Server Error: /data/
Traceback (most recent call last):
File "/home/user/.local/lib/python2.7/site-packages/django/core/handlers/base.py", line 235, in get_response
response = middleware_method(request, response)
File "/home/user/.local/lib/python2.7/site-packages/django/contrib/sessions/middleware.py", line 50, in process_response
request.session.save()
File "/home/user/.local/lib/python2.7/site-packages/django/contrib/sessions/backends/cache.py", line 62, in save
self.get_expiry_age())
File "/home/user/.local/lib/python2.7/site-packages/django/core/cache/backends/memcached.py", line 83, in set
if not self._cache.set(key, value, self.get_backend_timeout(timeout)):
File "/home/user/.local/lib/python2.7/site-packages/memcache.py", line 740, in set
return self._set("set", key, val, time, min_compress_len, noreply)
File "/home/user/.local/lib/python2.7/site-packages/memcache.py", line 1060, in _set
return _unsafe_set()
File "/home/user/.local/lib/python2.7/site-packages/memcache.py", line 1034, in _unsafe_set
store_info = self._val_to_store_info(val, min_compress_len)
File "/home/user/.local/lib/python2.7/site-packages/memcache.py", line 998, in _val_to_store_info
pickler.dump(val)
MemoryError
有人可能能夠幫助你,如果你真的顯示你如何使用memcached!但請注意,它不是用來容納非常大的物體。儘管可以增加默認的最大對象大小1MB。 – e4c5