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I Easy search installation 1. Download easy search docker pull elasticsearch:7.6.2 2. External folder mounting configuration and granting folder permissions mkdir -p /mydata/elasticsearch/config mkdir -p /mydata/elasticsearch/data echo "http.host: 0.0.0.0" >/mydata/elasticsearch/config/elasticsearch.yml chmod -R 777 /mydata/elasticsearc ...

Author: San DishuiBlog: https://blog.csdn.net/qq_30285985/ preface After understanding the principle of Alipay secret key setup, Alipay payment can be developed more quickly. Here is an example of Alipay's simpler payment scenario -- computer website payment. This scenario is relatively friendly to back-end developers. html pages have been p ...

1, Introduction to Scala scala is a multi paradigm programming language running on the JVM. It supports both object-oriented and function oriented programming Multi paradigm: it contains a variety of programming ideas. At present, there are four mainstream programming ideas, namely object-oriented, process-oriented, function oriented and gene ...

Hello everyone, let's revisit JavaScript. Last time, we reviewed the relevant contents of the prototype together. Let's take a map and review the contents last time:   Do you remember the last time? Click this link to view the last review: Revisit JavaScript(lesson11): object orientation (4) This time, we will learn more about JS object-or ...

preface The system generates a number between [1100], and the user inputs an integer at will. If the number entered by the user is smaller than the number generated by the system, the prompt "guess lower". If the number entered by the user is larger than the number generated by the system, the prompt guesses higher. If the numb ...

    Common annotations and usage in spring MVC Introduction to MVC Introduction to spring MVC Common annotations in spring MVC @GetMapping @RequestParam @RequestBody @PathVariable @RequestHeader @CookieValue @ModelAttribute @SessionAttributes New annotation @Difference between RequestMapping and @ GetMapping @PostMapping I ...

What is distributed lock? 　　 Control the access priority of multiple modules in distributed architecture To introduce distributed lock, we should first mention that thread lock and process lock correspond to distributed lock. Thread Lock: mainly used to Lock methods and code blocks. When a method or code uses a Lock, only one thread execut ...

Introduction to Dokit DoraemonKit can quickly enable your business test code to be managed and accepted uniformly here.DoraemonKit has many commonly used tools built in to avoid duplicate implementations. With one access, you will have a powerful collection of tools.With dokit platform, with interface Mock, health check-up, file synchronizatio ...

1, Relational database and non relational database 1 relational database Relational database is a structured database, which is created on the basis of relational model (two-dimensional table model) and is generally oriented to records. SQL statement (standard data query language) is a language based on relational database, which is used ...

Introduction to OpenFeign Feign is a declarative Web Service client. Its appearance makes it easy to develop Web Service clients. To use feign, you only need to create an interface and add corresponding annotations, such as FeignClient annotation. Feign has pluggable annotations, including feign annotations and JAX-RS annotations. Feign als ...