Programming VIP

The purpose of current limiting is to protect the system when the system flow is too large to avoid system instability or even failure due to too large flow. There are many current limiting schemes in the cloud native environment. The lightweight scheme can use the memory data combination scheme of Bucket4j + Hazelcast/ignite/infinispan. Senti ...

Spring Boot is a new development framework under the spring family. Its design purpose is mainly to simplify the creation and development process of spring applications. It provides features such as automatic configuration and starter dependency, so as to free developers from a large number of XML configurations. Spring Boot is committed to bec ...

Java_ Self writing byte buffer stream for data transmission I. byte buffered output stream ​        java.io.BufferedOutputStream extends OutputStream BufferedOutputStream: byte buffered output stream. Common member methods inherited from parent class: public void close(): close this output stream and release any system resources associated ...

Many beginners will be confused about how Spring Boot packages the application code and all dependencies into a separate Jar package, because after the traditional Java project is packaged into a Jar package, the dependencies need to be specified through the - classpath attribute before it can run. Let's analyze and explain the startup principl ...

Filter chain analysis In Spring security, all functions are implemented through filters, which form a complete filter chain. 4.1 initialization process analysis 4.1.1ObjectPostProcessor /** * Allows objects to be initialized. Typically, this is used to call the Aware method, initializingbean Afterpropertieset() and ensure disposab ...

Last This article introduces the spring ioc container initialization process as a whole (starter - > refresh - > registerbeandefinition - > docreatebean - > populatebean)But it is limited to the routine process. How to deal with some special cases, such as "object loop application" spring - this is the question to be answe ...

netty(3) – stick pack and half pack problem What is TCP sticky packet and half packet? Suppose the client sends two data packets D1 and D2 to the server respectively. Since the number of bytes read by the server at one time is uncertain, there may be the following four situations. The server reads two independent data packets, D1 an ...

Problems encountered in unit testing in current development After the business code development is completed, the new code needs to be unit tested. Due to the large number of third-party components and external system interfaces that the project depends on, the whole project needs to be started and various dependencies need to be loaded ev ...

jdk1.7 -: it is composed of array + linked list. The array is the main body. The linked list mainly exists to solve hash conflicts (i.e. the array index values calculated through the key are the same) (the "zipper method" solves conflicts). jdk1.8 +: it is composed of array + linked list + red black tree. There are great changes in r ...

Mybatis annotation development single table operation 1. Common notes of mybatis In recent years, annotation development has become more and more popular. Mybatis can also use annotation development, which can be used to reduce the writing of Mapper Mapping file. @Insert: add @Update: implement update @Delete: delete @Select: implement q ...