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I have been stuck with this problem with quite some time.I want to get keys from redis using redis template. I tried this.redistemplate.keys("*"); but this doesn't fetch anything. Even with the pattern it doesn't work.
Can you please advise on what is the best solution to this.
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To list the keys in the Redis data store, use the KEYS command followed by a specific pattern. Redis will search the keys for all the keys matching the specified pattern. In our example, we can use an asterisk (*) to match all the keys in the data store to get all the keys.
To support various operations on different datatypes, RedisTemplate provides operation classes like ValueOperations , ListOperations , SetOperations , HashOperations , StreamOperations , etc. For hash-related operations, which we'll use to store data in our Redis server, we'll use the HashOperations class.
The Redis KEYS command returns all the keys in the database that match a pattern (or all the keys in the key space). Similar commands for fetching all the fields stored in a hash is HGETALL and for all fetching the members of a SMEMBERS. The keys in Redis themselves are stored in a dictionary (aka a hash table).
Reading Data from Redis To retrieve a key with a string value, use the GET command. If a value does not exist for this key, GET replies with a nil. Since GET only works with string values, you need the LRANGE command to get list values. “0” in the example above specifies the start index of the list and “-1” the end.
Try
import org.springframework.data.redis.core.RedisTemplate;
import org.apache.commons.collections.CollectionUtils;
String key = "example*";
Set keys = redisTemplate.keys(key);
if (CollectionUtils.isEmpty(keys)) return null;
List list = redisTemplate.opsForValue().multiGet(keys);
Try redisTemplate.setKeySerializer(new StringRedisSerializer());
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