先安装redis，我的系统是ubuntu 13.04，安装比较easy。
apt-get install redis-server
redis的默认配置文件放在/etc/redis/redis.conf，全部都采用默认参数，对仅仅做测试而言，端口6379是最重要的
activerehashing yes appendfsync everysec appendonly no auto-aof-rewrite-min-size 64mb auto-aof-rewrite-percentage 100 bind 127.0.0.1 client-output-buffer-limit normal 0 0 0 client-output-buffer-limit pubsub 32mb 8mb 60 client-output-buffer-limit slave 256mb 64mb 60 daemonize yes databases 16 dbfilename dump.rdb dir /var/lib/redis hash-max-ziplist-entries 512 hash-max-ziplist-value 64 list-max-ziplist-entries 512 list-max-ziplist-value 64 logfile /var/log/redis/redis-server.log loglevel notice lua-time-limit 5000 no-appendfsync-on-rewrite no pidfile /var/run/redis/redis-server.pid port 6379 rdbchecksum yes rdbcompression yes save 300 10 save 60 10000 save 900 1 set-max-intset-entries 512 slave-priority 100 slave-read-only yes slave-serve-stale-data yes slowlog-log-slower-than 10000 slowlog-max-len 128 stop-writes-on-bgsave-error yes timeout 0 zset-max-ziplist-entries 128 zset-max-ziplist-value 64
启动redis，
redis-server /etc/redis/redis.conf
然后是ruby用到的gem
sudo gem install redis
最后是写ruby代码
# 20140117, redis_test.rb require 'rubygems' require 'redis' redis=Redis.new(:host => "localhost", :port => 6379) redis2=Redis.new(:host => "localhost", :port => 6379) puts "TEST REDIS LIST" redis.lpush:"list1",3 redis.lpush:"list1",2 redis.lpush:"list1",1 redis.rpush:"list1",4 redis2.rpush:"list1",5 p redis.lrange:"list1",0,-1 p redis.llen:"list1" redis.ltrim:"list1",0,2 p redis.lrange:"list1",0,-1 p redis.lindex:"list1",1 puts "TEST " + (redis.type:"list1") + " END" redis.del:"list1" puts "TEST REDIS STRING" redis.set:"str1","1234567890" p redis.get:"str1" puts "TEST " + (redis.type:"str1") + " END" redis.del:"str1" puts "TEST REDIS SET" redis.sadd:"set1","222" redis.sadd:"set1","111" redis.sadd:"set1","333" p redis.scard:"set1" p redis.smembers:"set1" redis.sadd:"set2","444" redis.sadd:"set2","333" redis.sadd:"set2","555" p redis.sunion:"set1","set2" p redis.sinter:"set1","set2" puts "TEST " + (redis.type:"set1") + " END" redis.del:"set1" redis.del:"set2" puts "TEST REDIS ZSET" redis.zadd:"sort1",2,"222" redis.zadd:"sort1",1,"111" redis.zadd:"sort1",3,"333" p redis.zrange:"sort1",0,-1 p redis.zrangebyscore:"sort1",2,3 p redis.zrangebyscore:"sort1",2,-1 puts "TEST " + (redis.type:"sort1") + " END" redis.del:"sort1" puts "TEST REDIS HASH TABLE" redis.hset:"hash1","key1",1 redis.hset:"hash1","key2",2 redis.hset:"hash1","key3",3 p redis.hget:"hash1","key2" p redis.hkeys:"hash1" p redis.hexists:"hash1","key4" redis.hdel:"hash1","key2" p redis.hget:"hash1","key2" p redis.hkeys:"hash1" puts "TEST " + (redis.type:"hash1") + " END" redis.del:"hash1" p redis.keys
这里测试了redis常用的一些数据结构，输出如下
TEST REDIS LIST ["1", "2", "3", "4", "5"] 5 ["1", "2", "3"] "2" TEST list END TEST REDIS STRING "1234567890" TEST string END TEST REDIS SET 3 ["111", "222", "333"] ["111", "222", "333", "444", "555"] ["333"] TEST set END TEST REDIS ZSET ["111", "222", "333"] ["222", "333"] [] TEST zset END TEST REDIS HASH TABLE "2" ["key1", "key2", "key3"] false nil ["key1", "key3"] TEST hash END []
老一些的代码中可能说会需要安装system_timer，ruby 1.9开始，system_timer就已经不需要了。