caching

问题 I have an ordinary windows service that processes a large data set and stores it to a DB. This windows service also acts to host a WCF service that serves the processed data up to one or more GUIs. Currently the WCF service has to hit the DB at least once to get the data for the client, but the size of the data set is such that this is extremely slow, and eats up a lot of memory because of the duplication of data. Ideally I would like to share the results of the data processing directly (in

问题 I have configuration for Ehcache as next: <cache name="test-cache" maxEntriesLocalHeap="50" maxEntriesLocalDisk="50" eternal="false" diskSpoolBufferSizeMB="10" timeToIdleSeconds="90" timeToLiveSeconds="60" memoryStoreEvictionPolicy="LFU" transactionalMode="off"> <persistence strategy="localTempSwap"/> </cache> And the following code that use it: Ehcache cache = CacheManager.getInstance().getCache("test-cache"); cache.setStatisticsEnabled(true); cache.setStatisticsAccuracy(Statistics

问题 I am new to Reactnative and Javascript and I am trying to cache the data from APi and get it. But it is not working. I could not render the data. I am getting the error. How can I cache and retrieve data from cache when there is no internent? I have implemented the code for caching as follows: export default class ViewpagerP extends Component { constructor(props) { super(props); this.state = { isLoading: true, data: [] } } async componentDidMount() { const photoStorage = await AsyncStorage

问题 I'm using AppFabric for Windows Server 1.1 with Entity Framework and the Entity Framework Cache Adapter. Recently, for one of our customer, we encountered memory pressure on one of the cache node. AppFabric Cache started evicting least recently used objects. The problem is that the Entity Framework Cache Adapter stores objects in dependent regions. So if a region is cleared or removed by AppFabric, the cache adapter must remove objects in the dependent regions as well. I've successfully

问题 I want to prevent certain files from ever being cached by a browser (for copyright reasons). I know you can change the headers using PHP: header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1 header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past Is this as good as it gets? Can anyone think of additional layers of security? 回答1: adding a timestamp in the resource's url: http://example.com/img.jpg?t=12234234 //append this in the server side this fools the browser and

问题 I've been trying to get this working for a while now with no luck. I want to enable the 2nd level cache to prevent fetching from some lookup tables. I set up my configuration in code cfg = new Configuration(); cfg.Properties[NHibernate.Cfg.Environment.ConnectionProvider] = "NHibernate.Connection.DriverConnectionProvider"; string connectionString = connection.ConnectionString; cfg.Properties[NHibernate.Cfg.Environment.ConnectionString] = connectionString; cfg.Properties[NHibernate.Cfg

问题 I've got a bit of an odd issue here. Basically it only occurs in IE. Safari, Firefox, and Opera work just fine. FYI, I am using XMLCharts (http://www.maani.us/xml_charts/) to display chart data. Basically I have a library that generates up-to-the-minute data on the fly based on selected date ranges. Well, for whatever reason, IE refuses to show the updated chart after changing the date range. I've confirmed that the server is actually generating the renewed data in the background (as I can

问题 I would like to use Android's LruCache in my plain old non-Android Java projects. Is there an equivalent data structure in regular Java or do I have to roll out my own implementation? 回答1: In regular Java you can do it with a LinkedHashMap , using the 3-argument constructor to make it access-ordered, and overriding removeEldestEntry to expire entries. 来源： https://stackoverflow.com/questions/53417187/is-there-an-equivalent-of-androids-lrucache-in-java

问题 I'm trying to move caches and index directories from the IntelliJ IDEA config dir to RAM mount point in /tmp using symbolic links. I've added: tmpfs /tmp/ramdisk tmpfs defaults,size=1024M,x-gvfs-show,mode=1777 0 0 to /etc/fstab , and replaced caches and index directories in the intellij config directory with symbolic links pointing to the ram mount point with: $ mkdir /tmp/ramdisk/intellij/caches $ mkdir /tmp/ramdisk/intellij/index $ ln -s /tmp/ramdisk/intellij/caches caches #inside intellij

问题 We are localizing our app to be able to easily switch between languages. Everything works nicely except for some cached values that are actually in navigation. We have two options: completely restart app on language change - in this case I need a notification and force restart just load new strings into the table - in this case it will require to replace string values and rbuild custom navigation state. IN both cases we need a way to find out when language switches. Is there an intent we can