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Interface encryption communication idea: 1) Agree on the secret key for communication between both parties, such as appKey = wenzhou 2) Communication security verification passed sign ature  1. Generate timestamp, random number or random string, etc., such as timestamp: time=677899002   2. The communication secret key, time stamp ...

1 project overview As we all know, the express cabinet is used to store express, and its basic functions include storing express and taking express. The express cabinet system is only for two users - ordinary users and couriers. For ordinary users, it is just the function of taking express delivery, which will not be described here. For courie ...

What is spring MVC springMVC Is based on MVC Architecture to simplify WEB Application framework; A framework that belongs to the presentation layer. How spring MVC works The user sends a request to the front-end controller. The front-end controller receives the request and calls the processor mapper. The processor mapper calls the processor ...

Brief description A class has only one instance. It is created by itself and provides an entry for obtaining an instance. External classes can directly obtain the instance object through this entry. Scene In many cases, the whole application can only provide a global object. In order to ensure uniqueness, the reference of this global ...

Today, let's start with the public module and build the spring cloud architecture. If you happen to be doing this, I hope it can help you Common module encapsulation In a complete microservice architecture, the processing of string and date is often the most. In some security application scenarios, encryption algorithms will also be used. In ...

Deep dive kafka producer - Core Architecture 3. Deep dive KafkaProducer infrastructure kafka has customized a set of network protocols, which can be implemented in any language to achieve the effect of pushing messages to and from kafka clusters. The clients module in the source code of kafka version 2.8.0 is the official default imple ...

Java network programming summary 1.1 general Letter: Computer network: Computer network refers to a computer system that connects multiple computers and their external devices with independent functions in different geographical locations through communication lines and realizes resource sharing and information transmission under the managem ...

1. Collection basis 1.1 collection overview Features of set: provide a storage model with variable storage space, and the 1 data capacity can be changed. There are many collection classes. At present, let's learn an ArrayList ArrayList<E> Resizable array implementation<E> Is a special data type, generic How to use? Use the ref ...

This article is mainly a case review of the database. Students who don't understand the database can have a look. It's best to try it again. It will be helpful. Database Version (I) In order to review and consolidate the previous knowledge, I did this exercise, encountered problems and deepened my understanding. This article is suitable ...

Background and overview The author is a new recruit in the school. The company uses Golang. He has Web development experience in Java and PHP and is familiar with the front-end Vue technology stack. He has not written Golang project before. He just read Golang's syntax according to the rookie tutorial a few months ago to understand its natura ...