因为并没有一个单独的线程用于刷新 OR 清理cache,对于cache的操作,都是通过访问/读写带来的,也就是说在读写中完成缓存的刷新操作!其次,我们看到了,我们非常通俗的告诉cache,我们的缓存策略是什么,SO EASY!在如此简单的背后,是guava帮助我们做了很多事情,比如线程安全。 让异步回调更加简单 JDK中提供了Future/Future...
# # This option is usually useful when using Redis as an LRU cache, or to set # an hard memory limit for an instance (using the 'noeviction' policy). # 当内存达到设置上限时,内存的淘汰策略 # maxmemmory-policy [volatile-lru or volatile-tt or volatile-randowm or allkeys-lru or allkeys...
Difficult to Retrieve Logs for Debugging:The logs written using printStackTrace is written to System.err which is hard to route or filter elsewhere. Instead, using Loggers, it is easy to retrieve logs for debugging purpose. Violation of Coding Best Practices:Generally, as per coding guidelines i...
@Test public void test1() throws Exception{ String realPath = "d:\\testRule.xls";//指定决策表xls文件的磁盘路径 File file = new File(realPath); InputStream is = new FileInputStream(file); SpreadsheetCompiler compiler = new SpreadsheetCompiler(); String drl = compiler.compile(is, InputType....
for example java.lang.Runtime is a Singleton class. Creating Singleton was tricky prior Java 4 but once Java 5 introduced Enum its very easy. see my article How to create thread-safe Singleton in Java for more details on writing Singleton using enum and double checked locking which is purpos...
You can safely run a Java applet downloaded from the Internet, because Java's security features prevent these types of applets from accessing a PC's hard drive or network connections. An applet is typically a small Java program that is embedded within an HTML page. Java can be considered ...
The tasks dependency is easy to grasp because it directly maps the underlying document or folder tree structure, as depicted in Figure 3. The fork/join framework maximizes parallelism by ensuring that a pending document’s or folder’s word counting task can be executed while a folder’s task...
Who said OAuth/OAuth2 was difficult? Configuring ScribeJava isso easy your grandma can do it! check it out: OAuthServiceservice=newServiceBuilder(YOUR_CLIENT_ID) .apiSecret(YOUR_CLIENT_SECRET) .build(LinkedInApi20.instance()); Thatsingle line(added newlines for readability) is the only thing ...
The Java HotSpot garbage collector is a fully accurate collector.In contrast, many other garbage collectors are conservative or partially accurate. While conservative garbage collection can be attractive because it is very easy to add to a system without garbage collection support, it has certain draw...
The-enableassertions(-ea) option applies to all class loaders and to system classes (which don't have a class loader). There's one exception to this rule: If the option is provided with no arguments, then it doesn't apply to system classes. This makes it easy to enable assertions in ...