java performance tuning and optimization

: Checking URLsCompression: Boot compressioncompressionminsize:2048 when the return content is greater than or equal to 2kb boot compression, to the client in the decompressionCompressablemimetype: Compression typeIi. springboot Item 1, JVM parametersSpringboot starts directly with the jar package and adds parameters to the start command, here is an example:nohup java -server -Xms4096m -Xmx4096m -Xmn1024m -Xss256K -XX:+DisableExplicitGC -XX:MaxTenurin

This article will be the second article in the JVM Performance Tuning series (first: Portal), and the Java compiler will be the focus of this article. In this paper, the author (Eva Andreasson) first introduces different kinds of compilers, and compares the performance of client-side compilation, server-end compiler a

The Java platform's garbage collection mechanism significantly improves the efficiency of developers, but a poorly implemented garbage collector can consume an application's resources too much. In the third part of the Java Virtual Machine Performance Optimization series, Eva Andreasson introduces the

control.Android also offers some of the more powerful data types, such as Sparsearray, Sparsebooleanarray, Sparseintarray, and Pair.The data structure of the sparse series is a special process for the case of the key int, using binary lookup and simple array storage, plus the overhead of not requiring a generic conversion, and better performance than the map. But I don't quite understand why the default capacity size is 10, is it statistical, or now

aspects of Java application performance are stability and reliability. Under SLA umbrella with 99.9% typical available targets, stability and reliability are particularly important for program operations. These systems should have a high level of fault tolerance and a rigorous budget for applications and resources to prevent the multi-meter effect. This approach prevents some of these situations, such as t

the most suitable. Because WeakHashMap stores all table items within the system memory range, and once the memory is insufficient, those that are not referenced during GC will be quickly cleared to avoid system memory overflow. 17. tips to help improve system performance: 1. Use exceptions with caution: Using try-catch in a for Loop will greatly reduce system performance. 2. Use local variables: the access

String ObjectThe string object is an important data type in Java, and in most cases we will use a string object. In fact, in the Java language, its designers also do a lot of string optimization work, these are the characteristics of string objects, they are:Non-denaturing，Constant Pool OptimizationAnd The final definition of the string class .1.1 invarianceThe s

Strings are one of the most important objects in software development. Typically, a string object occupies the largest chunk of space in memory, so how to handle strings efficiently is bound to be the key to improving overall performance. 1. String objects and their characteristicsThe eight basic data types in Java do not have a string type because the string type is a further encapsulation of the char

to read and write data. The channel represents the source or destination of the buffered data, which is used to read or write data to the buffer, and is the interface for accessing the buffer.This paper mainly introduces the buffer and channel in NIO to improve the performance of the system.1. NiO's buffer class and channelIn the implementation of NIO, buffer is an abstract class. The JDK creates a buffer for each

Strings are one of the most important objects in software development. Typically, a string object occupies the largest chunk of space in memory, so how to handle strings efficiently is bound to be the key to improving overall performance. 1. String objects and their characteristics The eight basic data types in Java do not have a string type because the string type is a further encapsulation of the char

capture and processing is very resource-intensive for Java applications, and program Gaoping rate for exception handling database: Most applications do not need databases, and massive database reads and writes can be time consuming lock contention: for highly concurrent programs, lock contention increases thread switching overhead if there is intense competition Memory: in general, as long as the application is designed properly, memory r

Performance Tuning: IO consumption analysis, performance tuning io consumption Performance Tuning-> how to analyze io consumption Reprinted please indicate the source: http://blog.csdn.net/supera_li/article/details/45225077For mo

treats Java code as input and translates it into bytecode (a language that executes in a Java Virtual machine). The static compiler interprets the input code one at a time, outputting the executable form, which is used when the program executes. Because the input is static, you will always see the same result. You can see different output only if you modify the original code and recompile. Dynamic compile