Programmer Think

SpringBoot e-commerce project mall (20k+star) address: https://github.com/macrozheng/mall brief introduction Last time I wrote an article Building Docker Image with Maven Plug-in It describes the way to construct docker image through docker-maven-plugin, which relies on the self-built Registry image warehouse. This article describes another wa ...

Deployment process definition We are now ready to add additional BPM logic to the Activiti engine. To do this, as the name of our OnboardingRequest Java class shows, we will use a simple induction process. In this example, we will enter the data, and then, if the number of years of experience exceeds 3, we will publish the task of personalizing ...

What is Java Agent (Java Probe)? You can understand it as the Java version of AOP. Just run this AOP project once at startup Java Agent runs only once at project startup and only after the java file is compiled into a class file. So it won't affec ...

Deploying virtualization under Windows system can adopt Hyper-V and vSphere virtualization technology, so KVM is needed under Linux system. KVM relies on CPU virtualization instruction set to achieve high performance virtualization support. Because of its high integration with the Linux kernel, it has good performance in performance, security, ...

Processes and threads Process is the basic unit that can run independently and allocate resources in a computer system. It is composed of PCB (process control block), data segment and code segment. It is a basic unit that can run independently. The creation, scheduling and allocation of processes require large time and space overhead. Threads ...

kafka cluster monitoring 1. Introduction to Kafka Offset Monitor Install and deploy Kafka Offset Monitor Install and deploy the kafka-mamager tool There are many Kafka cluster monitoring tools, and here we will only describe monitoring for Ka ...

brief introduction CopyOnWriteArrayList is a thread-safe version of ArrayList. It is also implemented internally through arrays. Every modification to the arrays completely copies a new array to modify, and then replaces the old arrays. This ensures that only blocking write operations, not blocking read operations, and achieves read-write separ ...

The last article shared with you the basic usage of Feign, a declarative micro-service invocation component. I believe you have learned the benefits of using Feign. Feign effectively solves the problem of code template when using RestTemplate, which makes the invocation between services easier and more ...

Bowen outline:(1) Concepts related to GlusterFS.(2) The deployment of various volume types of GlusterFS and the use of client mounting.(3) GlusterFS maintenance command. (1) Concepts related to GlusterFS: GlusterFS is an open source distributed file system, and is also the core of Scale-Out storage solution Gluster. It has powerful horizonta ...

1. Overview azkaban: https://azkaban.github.io/ 1.1. Why Workflow Scheduling System is Needed A complete data analysis system usually consists of a large number of task units: shell script program, java program, mapreduce program, hive script, etc. Time-dependent and time-dependent relationships ...