memcached

问题 I am working on trying to tune my caches and in doing benchmarking I found something that is confusing the hell out of me. Pulling a key from my remote Memcached box (local network) is taking 0.0008 seconds whereas pulling a key from my local APC cache is taking 0.0114 seconds. Yes, it is a full 14x faster. That seems awfully slow for a local cache... what settings should I be looking at tuning to make it more effective? Edit: As requested, here is my APC config from php.ini [APC] ;specifies

问题 I need to acccess memcache from my C++ application. In oerder to avoid reinventing the engine, I have been searching for existing libraries. Suprisingly, there are very few of them around (for the most part, interfacing is done in C not C++). However, I have found two - both of which have very early version numbers, and appear to be "dead" projects (development appears to have ceased. a. libmemcache-1.40.rc2 b. memcachedpp-0.1 I have a few questions: Is anyone outhere aware of a good/reliable

问题 In Django, to cluster memcached nodes, a very simple method is used. Simply list all node address in the settings.py file of all your django servers like so: CACHES = { 'default': { 'BACKEND': 'django.core.cache.backends.memcached.MemcachedCache', 'LOCATION': [ 'xxx.xxx.xxx.240:11211', 'xxx.xxx.xxx.242:11211', ..., ] } } Obviously editing the setting.py file of each instance whenever an instance drops out or a new one is added would be painful, how would you go about automagically managing

问题 I must be missing something really obvious here I think, but what I am trying to do is use MySQL 5.6 and return values through memcache So I have set up MYSQL to use the memcache plugin, set up the details in the innodb_memcache.containers table I now have two items in that table, the default ones entered by MySQL and my own settings, both of them have table names. To get the data via php I use: $memcache->get($key); Where $key is the data in the db column However this returns nothing, I

问题 I want to use all the data in my python app engine memcache. I do not know the keys in advance. How do I go about getting all data? 回答1: The only read functions available on memcache are: get(key, namespace=None) get_multi(keys, key_prefix='', namespace=None) As you can see, to get data from memcache you must provide one or more keys. 回答2: I am using a 'well known key' called "config" where I store a list of all other keys and use that to enumerate the rest of the items. 回答3: as in comments

问题 I want to use all the data in my python app engine memcache. I do not know the keys in advance. How do I go about getting all data? 回答1: The only read functions available on memcache are: get(key, namespace=None) get_multi(keys, key_prefix='', namespace=None) As you can see, to get data from memcache you must provide one or more keys. 回答2: I am using a 'well known key' called "config" where I store a list of all other keys and use that to enumerate the rest of the items. 回答3: as in comments

问题 AFAIK, Memcached does not support synchronization with database (at least SQL Server and Oracle). We are planning to use Memcached (it is free) with our OLTP database. In some business processes we do some heavy validations which requires lot of data from database, we can not keep static copy of these data as we don't know whether the data has been modified so we fetch the data every time which slows the process down. One possible solution could be Write triggers on database to create/update

问题 I've installed memcache and now how do I really view the data in memcache? Is there any way to see the data present in cache inside memcache? How do I really know whether memcache is getting data stored inside it? Note: I don't want to write any program to see the data inside memcache. Basically, memcache server is already installed in my environment and it is caching the data as well. But I would like to know if there are any utility programs available which will show me the cached data

问题 I want to manage mutiple DataSource using your Application Servers built-in features and access it using JNDI. I am using Spring boot with Spring JPA data. I am able to configure the application.properties for single datasource. But while trying to do the same for mutiple datasource, I am getting an exception while starting the application. Exception while starting the tomcat server:- Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner

问题 I have an old memcached client implementation that is based of the danga client, but was slightly modified. I think this client is now called Memcached-Java-Client. The implementation I have at hand is old, unmaintained, and seem to be bogus. I need to migrate the client to a newer client with the following constraints: I need the new client hashing algorithm to be compatible with the old one. If this constraint is not met, we will have to make the site (at least partially) unavailable for a