Programmer Group

SLF4J is a Simple Logging Facade for Java, which is a facade (appearance) interface or an abstraction of various logging frameworks, such as java.util.logging, logback, log4j, etc. with this product, we can not care about the specific implementation, that is to say, we can switch the logging framework at any time. The latest version of slf4j 1 ...

Spring boot configuration Servlet, Filter, Listener In spring boot applications, the embedded Servlet 3.0 + container will not directly use the ServletContainerInitializer and WebApplicationInitializer, that is, the Servlet, Filter and Listener configurations implemented through the above two interfaces are invalid, which is to prevent the desi ...

Foreword: Recent project of combining kafka and zookeeper containerization with rancher, I consulted related websites and books and found that there are many reasons why I chose to customize it if it is relatively strong to standardize the company. Let me briefly talk about the reasons why I chose to customize it finally: (Because k8s+kakfa te ...

What is the concept of global logging? It's easy to understand. Like one of the parts of the logging framework we've always used like logback and log4j, the minbox-logging distributed logging framework is now independent of api-boot-plugins and has joined the minbox-projects open source organization. The blog has a series of articles explainin ...

MyBatis was apache An open source project of iBatis In 2010, the project was migrated from apache software foundation to google code and renamed MyBatis. Moved to Github in November 2013. As an excellent orm framework, MyBatis is often compared with Hibernate. As a popular MyBatis, it avoids almost all JDBC code, manual parameter s ...

Huge buildings are always made of one wood and one stone. Why don't we make them? I often do some odd things, that's why. That's right, but I didn't say that! ——Lu Xun brew is the installation package tool of mac system. Similar to yum or apt get. What is the package path of brew installation. The following is an exam ...

Some time ago, in the development process based on springboot, we encountered a problem: the program needs to read all the files of a directory under resource, and it needs to be able to read them in the form of file. However, after packaging, the springboot project becomes a jar package. When reading the file, an error will be rep ...

Flume collects Log4j logs and sends them to Kafka for storage Environmental preparation Download Flume: http://flume.apache.org/ Install: extract the download package to the custom path Configure agent # Function: filter json information storage kafka agent.sources = s1 agent.channels = c1 agent.sinks = k1 agent.sources.s1.type = avro agen ...

Summary This blog builds a cluster environment based on zookeeper-3.4.9. 1. Download zookeeper Edition: http://zookeeper.apache.org/releases.html#download Download version: zookeeper-3.4.9.tar.gz 2. Host 192.168.8.21, 192.168.8.22, 192.168.8.23, 192.168.8.24 and 192.168.8.25. 3. Decompression tar -zxvf zookeeper-3.4.9.t ...

This article collates the jar packages and API records that I often use in Java development. <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 --> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <ve ...