Redis Custom Cache

1 ImportWeakref, Collections2 Import Time3 4 5 classLocalCache ():6NotFound =object ()7 8     classDict (Dict):9         def __del__(self):Ten             Pass One  A     def __init__(self,maxlen=20): -Self.weak =Weakref. Weakkeydictionary () -Self.strong=collections.deque (maxlen=maxlen) the  - @staticmethod -     defnowtime (): -         returnInt (time.time ()) +  -     defget (self, key): +         #after each key-value pair, add a field expiration time A         #first time to get expire= current time + expiration Time at         #non-first time, expire judge whether the expiration, expired can be considered data not found -         #data should be deleted after expiration -Value =self.weak.get (Key, Self.notfound) -         #No expiration -         if(Value is  notself.notfound): -expire = Value[r'expire'] in             #has expired -             if(Self.nowtime () >expire): to                 returnSelf.notfound +             Else: -                 returnvalue the         #expired-returned not found *         Else: $             returnSelf.notfoundPanax Notoginseng     defSet (self,key,value): -self.weak[key]=strongref=localcache.dict (value) the self.strong.append (strongref) +  A  the  fromFunctoolsImportWraps +  -  $ defFunccache (expire=1): $caches =LocalCache () -  -     def_wrappend (func): the @wraps (func) -         def __wrapped(*args, * *Kwargs):Wuyi             #calculates the key value of the cache theKey = str (func) + str (args) +Str (Kwargs) -  Wuresult =caches.get (Key) -  About             if(Result islocalcache.notfound): $result = Func (*args, * *Kwargs) -  -Caches.set (key, {R'result': result, R'expire': Expire +caches.nowtime ()}) -  Aresult =caches.get (Key) +  the             returnresult -  $         return __wrapped the  the     return_wrappend theF=funccache ()

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Redis Custom Cache