Hi, Is there any way to drop data add by a client when the client aborted or exit normally?
thanks. 在 2014年8月12日星期二UTC+8上午10时25分43秒，Dormando写道： > > > > Hello there, > > There he has a method to be able to remove items from the cache using a > regular expression on the key. For example we want to remove all the key as > "my_key_ *?" > > We try to parse all the slabs with the command "stats cachedump" but our > slabs contain several pages and it is impossible to recover all the > elements! > > Thank you. > > > > Hi, > > The common way to do this, instantly, and atomically across your entire > memcached cluster is via namespacing: > http://code.google.com/p/memcached/wiki/NewProgrammingTricks#Namespacing > > You take a tradeoff: before I look up my key, I fetch a side key which > contains the current prefix. Then I add that prefix to my normal key and > do the lookup. When you want to invalidate all keys with the same prefix, > you incr or otherwise update the prefix. The old keys will fall out of the > LRU and your clients will no longer access them. > > This is *much* more efficient than any wrangling around with scanning and > parsing keys. That only gets worse as you get a larger cluster, while > namespacing stays at a consistent speed. > > Does this match what you're looking for, or did you have some specific > requirements? If so, please give more detail for your problem. > -- --- You received this message because you are subscribed to the Google Groups "memcached" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
