ERR Client sent AUTH, but no password is set

This will might work if you don't want to set the password. enter image description here

spring.redis.host=127.0.0.1 
spring.redis.port=6379 
spring.redis.password=

Leave the password field as blank.

Use the requirepass a password option

redis 127.0.0.1:6379> AUTH PASSWORD

(error) ERR Client sent AUTH, but no password is set.

redis 127.0.0.1:6379> CONFIG SET requirepass "mypass"

OK

redis 127.0.0.1:6379> AUTH mypass

OK

There is no password set in your Redis instance. Password sent with redis-cli -a is just being ignored.

Now, you may set the password in redis instance. To do so, edit redis configuration file, set requirepass option and restart redis instance.

Or, just ignore password option while communicating with redis. E.g.

jedisPool = new JedisPool(jedisPoolConfig, host, port, IDLE_CONNECTION_TIMEOUT);

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