Redis Of conf To configure

redis start-up , It is started through the configuration file .

1. Company

Company ： Configuration file for unit Unit case insensitive .

2. contain

contain ： You can configure multiple configuration files at the same time .

3. The network configuration ：

bind 127.0.0.1   The binding of ip
protected-mode yes  Protected mode 
port 6379  Port number 

4. General configuration ：

daemon yes  Run as a background daemon , The default is no, We need to turn it on ourselves yes

pidfile /var/run/redis_6379.pid  If it runs in the background mode , We need to specify one pid file 

 journal  debug、verbose（ Be similar to debug）、notice（ Production environment ）、warning
	
loglevel notice  Configure log level 

logfile ..  Location of log files 

database 16  The default number of databases 

always-show-log yes   Whether to display the opening page log 

5. Snapshot configuration

Persistence , In a given time , How many operations have been performed , Will be persisted to the file （.rdb .aof）

 If 900s Inside , At least one key It's been modified , Then perform the persistence operation 
save 900 1
 If 300s Inside , At least ten key It's been modified , Then perform the persistence operation 
save 300 10
 If 60s Inside , At least a thousand key It's been modified , Then perform the persistence operation 
save 60 10000

 We learned about persistence later , We will customize this 

stop-writes-on-bgsave-error yes  Persistence if something goes wrong , Whether you need to continue working 
rdbcompression yes  Is it compressed? rdb file , It needs to be consumed cpu resources 
rdbchecksum yes  preservation rdb When you file , Check for errors 
dir ./ rdb The current directory where the file is saved 

6.replication Copy

​ Master slave copy explanation

replicaof <masterip> <masterport>  Configure the host 

7. Security configuration

 obtain redis password   No password by default 
    127.0.0.1:6379> config get requirepass
    "requirepass"
    ""

 Set the password 
	（1） Add directly in the configuration file   requirepass 123
	（2） Configure by command 
		127.0.0.1:6379> config set requirepass "123"
 Sign in  
	127.0.0.1:6379>auth 123

8. Limit clients

maxclients 10000  Settings can be connected to redis The maximum number of clients is 10000
maxmemory <bytes> redis Configure the maximum content capacity  
mavmemory-policy noeviction  The processing strategy after the content reaches the upper limit 
	1.volatile-lru: Only set the expiration time key Conduct lru（ The default value is ）
	2.allkeys-lru:  Delete lru Algorithm key
	3.volatile-random:  Delete the expiring key
	4.allkeyo-random:  Random delete 
	5.volatile-ttl:  Delete expiring 
	6.noeviction:  Never expire , Returns an error 

9.append only Pattern aof Configuration of

appendonly no   The default is not on aof Mode , The default is to use rdb Way persistent , In most cases ,rdb Quite enough ！
appendfilename "appendonly.aof"  The name of the persistent file 
appendfsync everysec  Once a second sync  You may lose this 1s The data of  
		always  It changes every time sync  Consumption performance 
		no  Don't execute sync  At this time, the operating system synchronizes its own data , The fastest