Redis Learning 01

Redis is a lightweight, memory-based key-value database (Key-value);

Official website: https://redis.io/

Download page: Https://redis.io/download

Current stable version: 4.0.11

Docker Image address: https://hub.docker.com/r/library/redis/

First, the following describes the Docker environment installation Redis

1. Download the image

$ Docker Pull redis:4.0.11

2. Start Redis

$ docker Run--name redis-server-p 6379:6379-d redis:4.0.11 redis-server--appendonly Yes

3. View

$ Docker exec-it eea5 redis-cli-h 127.0.0.1-p 6379-a '

or Docker exec-it Eea5 redis-cli

Default native 6379 default port

$ set Test test

$ set Test1 test1

$ get Test

$ info

Output all metrics for the currently connected Redis instance, including:

Server: Basic information about the Redis server

Clients: Status and metrics for client connections

Memory: Approximate RAM consumption metrics

Persistence: Data persistence-related status and metrics

Stats: Overall statistics

Replication: status and metrics related to master-slave replication

Cpu:cpu Use Cases

Cluster:redis Status of Cluster

Keyspace: Statistics that the database thinks about

4. Stop

$ docker Stop Eea5

Recommended stop mode by REDIS-CLI down with shutdown

5. Start a stopped container

$docker Start EEA5

Executable files include:

Redis-server:redis Service Side

Redis-sentinel:redis Sentinel

Redis-cli:redis command-line tools

Redis-check-rdb:redis RDB Check Tool

Redis-check-aof:redis Append only Files (aof) Check tool

Redis-benchmark:redis Benchmark/Performance testing tools

Second, Mac installation Redis Visualizer-redis Desktop Manager

Ref: 71378551

Direct download: https://pan.baidu.com/s/10vpdhw7YfDD7G4yZCGtqQg

Three, Redis event model

Single-threaded, non-blocking, multiplexed I/O models; (in some cases, threads or sub-threads are also created to perform certain tasks)

Contains a simple but powerful library of asynchronous events called AE, which encapsulates the polling mechanisms of different operating systems (non-blocking I/O related mechanisms) such as Epoll, Kqueue, select, etc.

Most common problem: latency issues (Redis cannot process other commands until a command is processed)

Redis Learning 01