high performance java persistence

consider the following four main areas: (1) Methods and modes of programming A good design can improve the performance of the program, not only for Java, but also for any programming language. Because it makes full use of various resources, such as memory, CPU, cache, object buffer pool and multithreading, so as to design high-

embed this method only if the method belongs to final (final), Private (private), or static. And in some cases, it is also required that it should never have local variables. If your code spends a lot of time calling a method that doesn't contain any of these properties, consider writing a "final" version for it.I/O: buffers should be used whenever possible. Otherwise, it might end up being a single byte of input/output at a time. Note that JDK 1.0 's I/O classes take a lot of synchronization,

By using some assistive tools to find bottlenecks in the program, you can then optimize the code in the Bottleneck section. There are generally two scenarios: optimizing code or changing design methods. We generally choose the latter because it is better to improve the performance of the program than to call some optimized code without calling the following code. A well-designed program can streamline the code and improve performance.Here are some of

thread in the Asynchronouschannelgroup.As can be seen, the biggest difference between Proactor and reactor is:A) There is no need to use a multiplexer.b) handler does not need to perform specific IO operations (such as reading data or writing data), but only performing business processing of IO data.Iv. Summary1, the IO in Java has synchronous blocking, synchronous non-blocking, asynchronous non-blocking three operation modes, respectively, correspon

34 Steve Blank United States The author of the startup Owner ' s Manual (entrepreneur's Guide) 35 Oliver Gierke Germany SpringSource (now VMware 's division, providing Java Enterprise Application development Platform) 36 Nicolas Fr?nkel Switzerland Java EE 37 Blaise Doughan United States XML

Performance (lock, garbage collection, compilation optimization, etc.) 33 Extreme enthusiasm Italy Agile development 34 Steve Blank United States The author of the startup Owner ' s Manual (entrepreneur's Guide) 35 Oliver Gierke Germany SpringSource (now VMware's division, providing Java Enterprise Application devel

Java Application Performance optimization is a commonplace topic, the author based on personal experience, the Java performance optimization is divided into 4 levels: Application layer, database layer, framework layer, JVM layer. Through the introduction of Java

Java Application Performance optimization is a commonplace topic, the author based on personal experience, the Java performance optimization is divided into 4 levels: Application layer, database layer, framework layer, JVM layer. Through the introduction of Java

Java is a widely used software development platform, and it is of great practical significance to learn the optimization methods for Java programs. Java Program Performance optimization: Make your Java program faster and more stable with

. When the session information on a node is modified, the session is broadcast to other Tomcat nodes to keep the session synchronized. Disadvantage is that the network is prone to busy, affecting the efficiency of the system;6. Mature high-availability system solution: Terracotta, which is the Java open source software, a cross-JVM virtual machine dedicated to the distributed cache framework, using it can a

complete request content, in order to perform some column-related calculation processing to obtain the request results, Finally, the results are written back to the client via network IO. Using Bio's coding style, usually the same thread is responsible for a connected IO read, data processing, and IO writeback, which most of the time may be waiting for IO to be ready, with very little time to really take advantage of CPU resources.When the server wants to handle a large number of client connect

Italy Agile development 34 Steve Blank United States The author of the startup Owner ' s Manual (entrepreneur's Guide) 35 Oliver Gierke Germany SpringSource (now VMware's division, providing Java Enterprise Application development platform) 36 Nicolas Fränkel Switzerland Java EE 37 Blaise Dou

JDBC-driven configuration in your Java application system, Then your Java EE application system has a database concept color, as a mature need to promote the Java application system, not recommended and specific database coupling, of course, how to ensure that the performance of J