Redis.MD

Redis

Install

1. Você pode baixar o Redis no link -> https://redis.io/download
2. Também pode provisionar utilizando docker -> https://hub.docker.com/_/redis/

curl http://download.redis.io/releases/redis-3.0.6.tar.gz  -o redis-3.0.6.tar.gz
tar xzf redis-3.0.6.tar.gz
cd redis-3.0.6
make

Em caso de erro com make ou gcc, instale os mesmos... sudo apt-get install make sudo apt-get install gcc

Get Started

cd src/
./redis-server

Em outra janela execute o comando abaixo:

./redis-cli
   
127.0.0.1:6379> SET count_customers 22
127.0.0.1:6379> GET count_customers

Para Excluir

127.0.0.1:6379> DEL count_customers

Redis Data Type

• STRINGs
• LISTs
• SETs
• HASHes => @RedisHash
• ZSETs

String Data Redis

https://github.com/diegolirio/demos-spring-boot/tree/master/demo-spring-boot-2-redis

• Maven

   <dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-data-redis</artifactId>
    <dependency>

• Product.java

@RedisHash("product")
public class Product {
    @Id
    private String id;
    private String description;
    private double price;
}

• Redis

127.0.0.1:6379> KEYS *

Output.

1. "product"
2. "product:3b4e5a1f-3793-4e5d-8338-90325009ed0a"

127.0.0.1:6379> HGETALL product:3b4e5a1f-3793-4e5d-8338-90325009ed0a   

1. "_class"
2. "io.github.diegolirio.demospringboot2redis.customer.Product"
3. "id"
4. "3b4e5a1f-3793-4e5d-8338-90325009ed0a"
5. "description"
6. "NOTEBOOK DELL"
7. "price"
8. "1000.0"

127.0.0.1:6379> HGET product:3b4e5a1f-3793-4e5d-8338-90325009ed0a description

"NOTEBOOK DELL"

127.0.0.1:6379> EXPIRE product:3b4e5a1f-3793-4e5d-8338-90325009ed0a 5

127.0.0.1:6379> TTL "product:3b4e5a1f-3793-4e5d-8338-90325009ed0a"
(integer) 2

LPUSH carros_novos "Fiat Uno"
LPUSH carros_novos "Honda Fit"
LPUSH carros_novos "Hyundai i30"
LPUSH carros_novos "Chevrolet Onix"
LINDEX carros_novos 0
LLEN carros_novos
LRANGE carros_novos 1 2
LLEN carros_novos
LTRIM carros_novos 0 2

Redis as DB

127.0.0.1:6379> CONFIG GET databases
1) "databases"
2) "16"
127.0.0.1:6379>

127.0.0.1:6379> SELECT 5
OK
127.0.0.1:6379[5]> INFO Keyspace
# Keyspace
db0:keys=1,expires=0,avg_ttl=0
127.0.0.1:6379[5]> 
127.0.0.1:6379[5]> 
127.0.0.1:6379[5]> Set produto "TV Samsung 42"
OK
127.0.0.1:6379[5]> INFO Keyspace
# Keyspace
db0:keys=1,expires=0,avg_ttl=0
db5:keys=1,expires=0,avg_ttl=0
127.0.0.1:6379[5]> 

./redis-server --port 6380 --slaveof 127.0.0.1 6379