Redis, a 2 minutes introduction
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Redis:Getting started (5 min guide) A noSQL database quick and fast and almost Italian :)
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Redis a 5 minutes guide
Transcript of Redis, a 2 minutes introduction
Redis:Getting started (5 min guide)A noSQL database quick and fast and almost Italian :)
What is RedisIs an advanced key-value store.
A redis serve can contain the following data structures:
● strings
● hashes
● lists
● sets
● sorted sets
Installing Linux$ wget http://download.redis.io/releases/redis-2.6.16.tar.gz
$ tar xzf redis-2.6.16.tar.gz
$ cd redis-2.6.16
$ make
Mac Users:$ port install redis$ brew install redis
Windows:ops :(
Getting started 1Start the server$ redis-server
_._
_.-``__ ''-._ _.-`` `. `_. ''-._ Redis 2.6.16 (00000000/0) 64 bit .-`` .-```. ```\/ _.,_ ''-._ ( ' , .-` | `, ) Running in stand alone mode |`-._`-...-` __...-.``-._|'` _.-'| Port: 6379 | `-._ `._ / _.-' | PID: 7350 `-._ `-._ `-./ _.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | http://redis.io `-._ `-._`-.__.-'_.-' _.-' |`-._`-._ `-.__.-' _.-'_.-'| | `-._`-._ _.-'_.-' | `-._ `-._`-.__.-'_.-' _.-' `-._ `-.__.-' _.-' `-._ _.-' `-.__.-'
[7350] 10 Sep 13:03:33.329 # Server started, Redis version 2.6.16[7350] 10 Sep 13:03:33.329 * The server is now ready to accept connections on port 6379
Getting started 2Start the server$ redis-client _._
redis 127.0.0.1:6379> get foo"mirko2"redis 127.0.0.1:6379> set counter 100 OKredis 127.0.0.1:6379> incr counter(integer) 101redis 127.0.0.1:6379> RPUSH mylist "Mirko"(integer) 1redis 127.0.0.1:6379> RPUSH mylist "Mario"(integer) 2redis 127.0.0.1:6379> RPUSH mylist "Fabio"(integer) 3redis 127.0.0.1:6379> lrange mylist 0 2 1) "Mirko"2) "Mario"3) "Fabio"
Try reditInteractive console with the commands availablehttp://try.redis.io/
Even more...Creating a simple hashmap
HashesRedis Hashes are maps between string fields and string values, so they are the perfect data type to represent objects (eg: A User with a
number of fields like name, surname, age, and so forth):
redis 127.0.0.1:6379> HMSET user:1 username antirez password Mirko age 33
OK
redis 127.0.0.1:6379> HGETALL user:1
1) "username"
2) "antirez"
3) "password"
4) "Mirko"
5) "age"
6) "33"
Want to check is a user exists? (Login)
HMGET user:1000 password password
Ok, perfect. But what in Java?Very nice and easy project is
https://github.com/xetorthio/jedis
<dependency> <groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.0.0</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
Jedis jedis = new Jedis("localhost");jedis.set("foo", "bar");
String value = jedis.get("foo");
