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Quick Start

Test YugaByte DB Redis API

After creating a local cluster, follow the instructions below to test YugaByte DB’s Redis API.

redis-cli is a command line interface to interact with a Redis server. For ease of use, YugaByte DB ships with the 4.0.1 version of redis-cli in its bin directory.

1. Connect with redis-cli

  • Run redis-cli to connect to the service.
$ docker exec -it yb-tserver-n3 /home/yugabyte/bin/redis-cli

127.0.0.1:6379>
  • Run a Redis command to verify it is working.
127.0.0.1:6379> PING

"PONG"
  • Run redis-cli to connect to the service.
$ kubectl exec -it yb-tserver-0 /home/yugabyte/bin/redis-cli

127.0.0.1:6379>
  • Run a Redis command to verify it is working.
127.0.0.1:6379> PING

"PONG"
  • Initialize YugaByte Redis service.

Setup the redis_keyspace keyspace and the .redis table so that this cluster becomes ready for redis clients. Detailed output for the setup_redis command is available in the yb-ctl Reference.

$ ./bin/yb-ctl setup_redis
  • Run redis-cli to connect to the service.
$ ./bin/redis-cli

127.0.0.1:6379>
  • Run a Redis command to verify it is working.
127.0.0.1:6379> PING

"PONG"
  • Initialize YugaByte Redis service.

Setup the redis_keyspace keyspace and the .redis table so that this cluster becomes ready for redis clients. Detailed output for the setup_redis command is available in the yb-ctl Reference.

$ ./bin/yb-ctl setup_redis
  • Run redis-cli to connect to the service.
$ ./bin/redis-cli

127.0.0.1:6379>
  • Run a Redis command to verify it is working.
127.0.0.1:6379> PING

"PONG"

2. Simple key-value types

Insert a key and a value.

127.0.0.1:6379> set mykey somevalue

OK

Query the value by the key.

127.0.0.1:6379> get mykey

"somevalue"

Check if the key exists.

127.0.0.1:6379> exists mykey

(integer) 1

If the value is a number, it can be incremented.

127.0.0.1:6379> set counter 100

OK

127.0.0.1:6379> incr counter

(integer) 101

127.0.0.1:6379> incr counter

(integer) 102

127.0.0.1:6379> get counter

"102"

3. Hash data types

You can create a Redis Hash data type as follows. This models the data for user id 1000 with the following attributes {username : john, birthyear : 1977, verified : 1}.

127.0.0.1:6379> hmset user:1000 username john birthyear 1977 verified 1

OK

You can retrieve specific attributes for user id 1000 as follows.

127.0.0.1:6379> hget user:1000 username

"john"

127.0.0.1:6379> hget user:1000 birthyear

"1977"

You can fetch multiple attributes with a single command as follows.

127.0.0.1:6379> hmget user:1000 username birthyear no-such-field

1) "john"
2) "1977"
3) (nil)

You can fetch all attributes by using the hgetall command.

127.0.0.1:6379> hgetall user:1000

1) "birthyear"
2) "1977"
3) "username"
4) "john"
5) "verified"
6) "1"