Redis is an in-memory database that persists on disk. The data model is key-value, but many different kinds of values are supported: Strings, Lists, Sets, Sorted Sets, Hashes, HyperLogLogs, Bitmaps.
Start redis with the related configuration file from SSH
redis-server /path/redis.conf
Open a redis prompt from SSH
redis-cli
Note:
Redis Log Location –/var/log/
Redis Log File – redis.log or redis_portnumber.log
Check configuration loaded on redis-server
cat /var/log/redis_6379.log | grep Configuration
If you you can check timings when you stared redis-server and see if logs have the “Configuration Loaded”. If configuration loaded
You can use nano to manually view full log.
nano /var/log/redis_6379.log
Below Commands Should be run inside redis-cli
1. Check Redis Server status
PING
The output should be ‘PONG’ if server status is active
2. Set value in the key
SET key value
3. Get value in the key
GET key
4. Get the length of the value stored in a key
STRLEN key
5. Increment value in the key
INCR key
6. Increment the integer value of a key by the given amount
INCRBY key increment
7. Decrement the integer value of the key by one
DECR key
8. Decrement the integer value of a key by the given number
DECRBY key decrement
9. Delete key
DEL key
10. List of all active configuration variables you can change
CONFIG GET *
11. Get the value of maxmemory configuration for Redis
CONFIG GET maxmemory
12. Get the value of dbfilename
CONFIG GET dbfilename
13. Change key by issuing a “CONFIG SET” command like
CONFIG SET timeout 500
500 is new value
14. Change the key value for maxmemory
CONFIG SET maxmemory 4157683648
4157683648 is new value
15. Check the number of keys in the database.
DBSIZE
16. Check if a key exists
EXISTS key
Output will be in 0 or 1
Here, 0 and: 1 mean false and true, respectively.
17. Purge all of the keys from the database
FLUSH DB
18. Close both Redis and our telnet session
SHUTDOWN
