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This article is based on spring cloud. After users send and cancel their likes, they first store them in Redis, and then read the likes from Redis every two hours and write them into the database for persistent storage. The like function is available in many systems, but despite the small function, there are many things to consider if you want ...

Gateway overview In essence, the gateway should provide an access to various services, and provide services to receive and forward all internal and external client calls, as well as authority authentication, flow restriction control and so on. Spring Cloud Gateway is a gateway component developed by spring company based on Spring 5.0, Spring B ...

Official account: Special HouseAuthor: PeterEditor: Peter Hello, I'm Peter~ This article mainly introduces how to beautify the data of Pandas DataFrame. It is mainly realized through two methods in Pandas: Styler.applymap: returns a single string with CSS attribute value pairs element by elementStyler.apply: returns Series or DataFrame wit ...

1. Traversal of binary tree 1.1 preorder traversal Middle - > left - > right public static void preOrderRecur(Node head){ if(head == null){ return; } //Printing at the beginning is the first order traversal, printing at the middle position is the middle order traversal, and printing at the end is the second order traversal. System ...

1, Use of ConsumerThe source code analysis of Consumer mainly focuses on KafkaConsumer, which is the implementation class of the Consumer interface. KafkaConsumer provides a well encapsulated API. Developers can easily pull messages from Kafka server based on this API. In this way, developers do not care about the underlying operations such as ...

"This article focuses on a progressive Web application with a custom navigation bar Let's prepare our - "Main.dart"We will divide the whole page into several parts to facilitate formulation. I suggest you do so to get better programming. Let's view these parts in more detail. NavigationBar(), DashBoard(), CalendarSpace(). First, ...

RabbitMQ This paper combines some online materials for reference. If there is infringement, please point out. Characteristics of RabbitMQ RabbitMQ is an open source message middleware developed in Erlang language to implement AMQP (Advanced message queuing protocol). First, you should know some characteristics of RabbitMQ, Official webs ...

1, Overview We regard each data structure as an abstract data type. It not only defines the organization of data, but also gives the operations to process data. In C + + language, classes are used to represent abstract data types, and objects are used to store and process data in specific applications. The creation of C + + classes is the ba ...

catalogue 1, Tesseract OCR overview and environment configuration (1) Introduction to Tesseract OCR (2) Tesseract OCR installation 1. Program download and installation 2. Configure environment variables 3. Language configuration and program testing 2, Implementation of video caption extraction (1) Implementation principle (2) Code impl ...

What is slicing A slice is a reference to a contiguous fragment of an array. Slice is a reference type. It doesn't actually store elements. It just identifies a continuous fragment on the array. An array is a series of memory spaces in memory, and each element occupies a piece of memory. The data structure of slice is a structure body, which c ...