Programmer Group

Preface On February 16, 2018, Apache Dubbo joined the Apache Foundation incubator. On May 16, 2019, the board of directors of the Apache Software Foundation approved the graduation application of Apache Dubbo, which means that Apache Dubbo has officially become Apache's top project. To configure When Dubbo donates sperm to Apache, it means tha ...

Implement a lightweight MVC framework based on Spring MVC. Knowledge involves reflection mechanism, use of annotations, and use of some third-party toolkits. thinking The main overall process is shown in the figure below. As before, we defined a Dispatch Servlet to intercept requests (url requests at the end of. do are generally intercepted he ...

Original Link: https://my.oschina.net/u/1590001/blog/268213 Memory is not as good as bad pen. Here's tomcat brain-free optimization 1. Memory settings (VM parameter tuning)(1). In Win ...

ab ab is a pressure testing tool provided by apache, which is very convenient to use. install If Apache is installed, then ab is installed. If you don't want to install apache, you can install ab in the following way # ubuntu sudo apt-get install apache2-utils # centos yum -y install httpd-tools Pressure measurement Before press ...

brief introduction Feign is a declarative Web Service client, which simplifies the writing of Web Service clients. Compared with Ribbon+RestTemplate, developers only need to call HTTP API through simple interfaces and annotations. It supports Spring MVC annotations and JAX-RS annotations, as well as pluggable encoders and decoders. Integrating ...

1. Introduction to Spark In 2009, Spark was born at AMPLab Laboratory at the University of Berkeley. Spark is an experimental project with very little code and is a lightweight framework. In 2010, the University of Berkeley officially opened up th ...

Data sources can be created by Stream Execution Environment. addSource (sourceFunction). Flink also provides some built-in data sources for easy use, such as readTextFile(path) readFile(), and of course, it can also write a custom data source (by implementing the SourceFunction method, but can not be implemented in parallel). That's ok. Or impl ...

ActiveMQ is an open source messaging system provided by Apache, which is implemented entirely in Java, so it can support JMS (Java Message Service, or Java Message Service) specification very well. This article will introduce in detail the installation of ActiveMq, the integration with SpringBook to send queue messages, and the process of s ...

Original address: Construction of Go 1.13 Private Agent Service. Setting GOPROXY can only specify one proxy service address prior to the release of Go version 1.13.After entering Go 1.13, GOPROXY supports multi-proxy settings, which can be separated.The following: export GOPROXY=https://proxy.golang.org,direct According to the official document ...

Spring Cloud Config Implements Distributed Configuration Center 1. Distributed Configuration Center In distributed systems, there are a large number of service applications, and each application needs a corresponding configuration file to help complete the initialization and operation of the service environment.As a result, a large number of se ...