安裝
從官網(wǎng)下載最新版源碼
wget http://download.redis.io/releases/redis-4.0.2.tar.gz
解壓后執(zhí)行
make && cd src && make install PREFIX=/usr/local/redis
復(fù)制conf到redis目錄
cd /usr/local/redis && mkdir etc && cp ~/redis-4.0.2/redis.conf etc/
修改配置使其能夠在后臺(tái)運(yùn)行
vim /usr/local/redis/etc/redis.conf
將daemonize的值改為yes
# 啟動(dòng)
root@ubuntu:/usr/local/redis# bin/redis-server etc/redis.conf
17261:C 05 Oct 20:46:02.628 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
17261:C 05 Oct 20:46:02.628 # Redis version=4.0.2, bits=64, commit=00000000, modified=0, pid=17261, just started
17261:C 05 Oct 20:46:02.628 # Configuration loaded
通過(guò)ps看到
root 17262 0.0 0.2 44752 8388 ? Ssl 20:46 0:00 bin/redis-server 127.0.0.1:6379
綁定了6379
端口
API
使用redis-cli連接本地6379端口:
./redis-cli -h 127.0.0.1 -p 6379 -a "default"
127.0.0.1:6379> ping
PONG
測(cè)試
127.0.0.1:6379> SET test_int 123
OK
127.0.0.1:6379> SET test_string 'hello world'
OK
查看所有key
127.0.0.1:6379> KEYS *
1) "counter:__rand_int__"
2) "key:__rand_int__"
3) "test_string"
4) "test_int"
5) "mylist"
6) "myset:__rand_int__"
獲得特定的某個(gè)key
在這里int顯示為string
27.0.0.1:6379> get test_string
"hello world"
127.0.0.1:6379> get int
(nil)
127.0.0.1:6379> get test_int
"123"
刪除一個(gè)key
127.0.0.1:6379> DEL nokey
(integer) 0
127.0.0.1:6379> DEL test_int
(integer) 1
自增
127.0.0.1:6379> incr test_int
(integer) 124
127.0.0.1:6379> get test_int
"124"
在這里發(fā)現(xiàn)所謂的int在返回時(shí)依然是字符串。
數(shù)據(jù)結(jié)構(gòu)
Hash
Redis hash 是一個(gè)string類型的field和value的映射表第租,hash特別適合用于存儲(chǔ)對(duì)象措拇。
127.0.0.1:6379> HMSET test_hash name 'test_hash' value 'yes' count 12300
OK
127.0.0.1:6379> HGETALL test_hash
1) "name"
2) "test_hash"
3) "value"
4) "yes"
5) "count"
6) "12300"
127.0.0.1:6379> HGET test_hash value
"yes"
List
Redis列表是簡(jiǎn)單的字符串列表,按照插入順序排序慎宾。
127.0.0.1:6379> LPUSH test_list item1
(integer) 1
127.0.0.1:6379> LPUSH test_list item2 item3
(integer) 3
127.0.0.1:6379> LRANGE test_list 0 10
1) "item3"
2) "item2"
3) "item1"
127.0.0.1:6379> LINDEX test_list 2
"item1"
127.0.0.1:6379> LINDEX test_list 1
"item2"
127.0.0.1:6379> LINDEX test_list 0
"item3"
127.0.0.1:6379> RPUSH test_list item0
(integer) 4
127.0.0.1:6379> LRANGE test_list 0 10
1) "item3"
2) "item2"
3) "item1"
4) "item0"
Set
Redis的Set是string類型的無(wú)序集合丐吓。
127.0.0.1:6379> SADD test_set item0
(integer) 1
127.0.0.1:6379> SADD test_set item1
(integer) 1
127.0.0.1:6379> SADD test_set item1
(integer) 0
127.0.0.1:6379> SADD test_set item2
(integer) 1
127.0.0.1:6379> SMEMBERS test_set
1) "item2"
2) "item1"
3) "item0"
Sorted Set
Redis 有序集合和集合一樣也是string類型元素的集合,且不允許重復(fù)的成員浅悉。
127.0.0.1:6379> ZADD test_s_set 1 item0
(integer) 1
127.0.0.1:6379> ZADD test_s_set 2 item1
(integer) 1
127.0.0.1:6379> ZADD test_s_set 3 item2
(integer) 1
127.0.0.1:6379> ZADD test_s_set 4 item2
(integer) 0
127.0.0.1:6379> ZADD test_s_set 5 item2
(integer) 0
127.0.0.1:6379> ZADD test_s_set 3 item2
(integer) 0
127.0.0.1:6379> ZADD test_s_set 4 item2
(integer) 0
127.0.0.1:6379> ZADD test_s_set 4 item3
(integer) 1
127.0.0.1:6379> ZRANGE test_s_set 0 10 WITHSCORES
1) "item0"
2) "1"
3) "item1"
4) "2"
5) "item2"
6) "4"
7) "item3"
8) "4"
備份及恢復(fù)
備份
在cli界面鍵入SAVE
127.0.0.1:6379> SAVE
OK
在當(dāng)前目錄下可以看到對(duì)應(yīng)的備份文件
-rw-r--r-- 1 root root 188 Oct 8 12:28 dump.rdb
恢復(fù)
- 查看備份的目錄
127.0.0.1:6379> CONFIG GET dir
1) "dir"
2) "/usr/local/redis/bin"
- 停止Redis服務(wù)
- 拷貝備份文件到對(duì)應(yīng)目錄
- 啟動(dòng)Redis服務(wù)
ps: 默認(rèn)的啟動(dòng)目錄為對(duì)應(yīng)的備份目錄,當(dāng)進(jìn)程停止時(shí) (kill)會(huì)自動(dòng)將內(nèi)存中的數(shù)據(jù)保存在文件中券犁。
主從同步
- 修改主從配置為后臺(tái)運(yùn)行模式
daemonize yes
- 修改從服務(wù)端口為
63791
為從服務(wù)器添加slaveof 192.168.88.128 6379
- 默認(rèn)保持同步時(shí)數(shù)據(jù)一致后啟動(dòng)兩個(gè)服務(wù)器:
bin/redis-server etc/redis.conf
bin/redis-server etc/redis_2.conf
對(duì)主服務(wù)器添加數(shù)據(jù)
127.0.0.1:6379> SET test_master master
OK
127.0.0.1:6379> GET test_master
"master"
查看從服務(wù)器數(shù)據(jù)
root@ubuntu:/usr/local/redis# bin/redis-cli -p 63791
127.0.0.1:63791> GET test_master
"master"