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Redis Chapter 4 implementation of distribution lock and Lua script + native code implementation In the previous article, redistribute was introduced. The application of redistributed in distributed locks is very simple and convenient, but redistribute itself is a encapsulated framework. In this section, we explore the implementation of Redis's ...

Scene introduction Originally there were 1 billion numbers, but now there are 100000 numbers. It is necessary to quickly and accurately judge whether these 100000 numbers are in the 1 billion number library? Solution 1: store 1 billion numbers in the database and query the database. The accuracy is improved, but the speed will be relative ...

  for Redis It is very important to understand the conf file. Like JVM, Mysql master-slave replication, Tomcat basic configuration and Nginx configuration, see the true chapter for details. Especially for Redis cluster or some personalized configuration, this Redis The understanding of Config is even more essential. Here, the author divide ...

In one work, there was a small accident. The result of a redis write and read method was always different from what was expected. After careful consideration, it was found that because all nodes in the cluster use shared caches and queues, resource competition may occur among nodes in some scenarios, There may be a "thread insecurity probl ...

List introduction Each string in the List in Redis becomes an element. A List can store up to 2 ^ 32 - 1 elements. In Redis, you can insert (LPUSH) and pop-up (LPOP) at both ends of the list. You can also get the list of elements in the specified range and the elements of the specified index subscript. List is a flexible data structure, wh ...

1. Introduction We can see that the main data structures used in redis include: simple string (SDS), linked list, dictionary, compressed list, integer set, etc. Redis objects are implemented by these data structures. Moreover, in order to select more appropriate data structures for different objects in different use scenarios, redis has cr ...

1, jdk installation Download jdk: Official address: https://www.oracle.com/java/technologies/javase-downloads.html Unzip the downloaded package: #Use command: tar -zxvf jdk-8u291-linux-x64.tar.gz #To facilitate management after decompression: mv jdk-8u291-linux-x64/ /usr/core/jdk #I like to use core as a common (core) and immovable dire ...

preface This lecture is from Docker series explanation courses , a separate section, Previous chapters It is mainly theory + practice. Since this chapter, it has entered the advanced application of Docker. Before browsing this article, it is recommended to understand Use of Dockerfile core commands，Optimization of Dockerfile After ...

Redis publish and subscribe Redis publish / subscribe (pub/sub) is a message communication mode: the sender (pub) sends messages and the subscriber (sub) receives messages Redis client can subscribe to any number of channels Subscribe / publish message diagram: The following figure shows the relationship between channel 1 and the thre ...

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