bases_de_donnees:redis
Ceci est une ancienne révision du document !
Table des matières
Redis
Application pour gérer Redis: RedisInsight
Utilisation sans docker
sudo apt install redis redis-server # starts redis
Utilisation du CLI:
redis-cli
Commands
- Basic values (string): SET, GET
- HashMaps: HSET, HGET, HMGET (Get multiple keys)
HashMaps
Example:
> HSET loggedUser:123 name "John Doe" url "https://url" role "Developer" (integer) 3 > HMGET loggedUser:123 name role 1) "John Doe" 2) "Developer"
Exemple d'un panier:
> HSET cart:123 prod:1:name "Oranges" prod:1:price "2,23" prod:1:amount "1" prod:2:name "Apples" prod:2:price "1,50" prod:2:amount "4" (integer) 5 > HINCRBY cart:123 prod:1:amount 3 (integer) 4 > HGETALL cart:123 1) "prod:1:name" 2) "Oranges" 3) "prod:1:price" 4) "1,50" 5) "prod:1:amount" 6) "4" 7) "prod:2:name" 8) "Apples" 9) "prod:2:amount" 10) "4" > HLEN cart:123 (integer) 5
Listes
- LPUSH: Left push
- RPUSH: Right push
> LPUSH mylist "one" "two" "three" "last element" > LPOP mylist "last element" (integer) 4 > LPOP mylist 3 1) "three" 2) "two" 3) "one"
- FIFO Queue: using RPUSH with LPOP
- LIFO Queue: using LPUSH with LPOP
> LPUSH mylist "one" "two" "three" "last element" (integer) 4 > LRANGE mylist 0 1 1) "last element" 2) "three" > LRANGE mylist 0 -1 1) "last element" 2) "three" 3) "two" 4) "one"
INSERT
> LINSERT mylist AFTER "two" "four" (integer) 5 > LRANGE mylist 0 -1 1) "last element" 2) "three" 3) "two" 4) "four" 5) "one"
bases_de_donnees/redis.1671068250.txt.gz · Dernière modification : 2022/12/15 02:37 de sgariepy