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    <p>Your initial question is about high cpu usage, the answer i think is simple, with GAE and databases like BigTable (non-relational) the code with <code>entries.count()</code> is expensive and the <code>for entry in entrie</code> too if you have a lot of data.</p> <p>I think you must have to do a couple of things:</p> <p>in your <code>utils.py</code></p> <pre><code>def GetDictionaryKey(lang, key): chache_key = 'dictionary_%s_%s' % (lang, key) data = memcache.get(cache_key) if not data: entry = DictionaryEntries.all().filter("lang = ", lang).filter("value =", key).get() if entry: data = memcache.add(cache_key, entry.value, 60) else: data = 'no result for %s' % key return data </code></pre> <p>and in your filter: </p> <pre><code> def translate(key, lang): return dictionary.GetDictionaryKey(lang, key) </code></pre> <p>This approach is better because:</p> <ul> <li>You don't make the expensive query of <code>count</code></li> <li>You respect the MVC pattern, because a filter is part of the Template (View in the pattern) and the method <code>GetDictionaryKey</code> is part of the Controler.</li> </ul> <p>Besides, if you are using django i suggest you slugify your cache_key:</p> <pre><code>from django.template.defaultfilters import slugify def GetDictionaryKey(lang, key): chache_key = 'dictionary_%s_%s' % (slugify(lang), slugify(key)) data = memcache.get(cache_key) if not data: entry = DictionaryEntries.all().filter("lang = ", lang).filter("value =", key).get() if entry: data = memcache.add(cache_key, entry.value, 60) else: data = 'no result for %s' % key return data </code></pre>
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    1. POgae python optimization: django filter for language support
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    1. CO+1 from me. I haven't tested it, but it's reasonable, that this would lead to a performance improvement. @fredrik: If it does, you should accept this answer. My gettext approach is good for texts developers can control, but I haven't found a sound way to do user input translation with Django's gettext support, yet.
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    2. CO@diegueus9: Tanks. I'll try it as soon as I get home. Been gone a week on vacation. And I don't seem to be able to change the accept status. I'll email the stackoverflow team and see if they can change it.
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    3. CO@diegueus9: Worked absolutely sweet! Thanks again. One thing. When adding to memcache, you need to do a get to. Since memcache.add just returns True or False if it was successfully added or not.
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