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catalogue   1, Redis master-slave replication   full resync partial resync (incremental replication) 2, Redis master-slave replication configuration 3, Sentinel mechanism principle Tasks that each Sentinel needs to perform regularly Automatically discover Sentinel and slave servers Sentinel select master rule 4, Sentinel mech ...

You can search Redis on bilibili to learn videos (crazy God said) Getting started with Redis summary Official website: https://redis.io/ Chinese website: https://www.redis.cn/ Redis (Remote Dictionary Server), i.e. remote dictionary service. It is an open source log and key value database written in ANSI C language, supporting network, memo ...

1.ELK log analysis 1.1 advantages and disadvantages of log server advantage Improve security Centralized storage of logs shortcoming Difficult analysis of logs 2. What is elk? The management tool for simplified log analysis is composed of Elasticsearch(ES), Logstash and Kibana. The official website is: https://www.elastic.co/products E ...

1, MongoDB replica set The main significance of MongoDB replica set is to achieve high service availability, which is similar to the sentinel mode in Redis. 1. Copy set function It mainly provides two functions: 1. When the data is written to the Primary node, copy the data to another Secondary node; 2. When the primary node fails, a ne ...

1,hset Description: set the value of the field in the hash table key to value. If the key does not exist, a new hash table is created and HSET operation is performed. If the field already exists in the hash table, the old value will be overwritten. Parameter: key field value Return value: if the field is a new field in the hash table and the v ...

1. List Redis list is a simple string list, sorted by insertion order. You can add an element to the head (left) or tail (right) of the list A list can contain up to 2 ^ 32 - 1 elements (4294967295, with more than 4 billion elements per list). Collection members are * * not unique, * * which means that duplicate data can appear in the collect ...

Install redis6.2 and enable TLS encryption install # Install dependent software sudo apt update sudo apt install make gcc libssl-dev pkg-config # Download redis and decompress wget https://download.redis.io/releases/redis-6.2.6.tar.gz tar -xvf redis-6.2.6.tar.gz # compile cd redis-6.2.6 make BUILD_TLS=yes # If there is an error during c ...

Link to the above: (if you don't know much about Spring integration Redis, please refer to) Spring integration Redis introduction details and basic exercises_ Yang Daxian loves basketball - CSDN blog This article only does functional testing to show the code logic, and will be released later on how to use it in the project. Shopping ca ...

brief introduction Today, we mainly learn about global unified exception handling step try catch is often used in Web applications, which will lead to the feeling of disordered code structure and is not conducive to debugging code. It will be a good thing if all exceptions can be unified into one module. Then @ ControllerAdvice and @ Excepti ...

introduceThe actor mode describes the actor as the lowest level "cell". In other words, you write code in a separate unit (called an actor) that receives messages and processes them one at a time without any concurrency or threads.In other words, after dividing independent computing units according to ActorId, the same ActorId re-entr ...