Ruhshan

@Service
@Slf4j
public class KeyValuePairServiceImpl implements KeyValuePairService {
    private final KeyValuePairRepository keyValuePairRepository;

    public KeyValuePairServiceImpl(KeyValuePairRepository keyValuePairRepository) {
        this.keyValuePairRepository = keyValuePairRepository;
    }

    @Override

Ruhshan

@EnableCaching
@Configuration
public class RedisConfig {


    private final RedisSerializer<String> stringSerializer = RedisSerializer.string();
    private final RedisSerializer<Object> objectRedisSerializer = RedisSerializer.json();

    private final Duration ttl = Duration.ofHours(6);

Ruhshan

## solution to problem 1
def is_palindrome(n):
    if n < 0:
        return False
    
    s = str(n)

    flag = 0

    for c in s[:len(s)/2]:

Ruhshan

List kafka topics

kafka-topics --bootstrap-server localhost:9092 --list

Delete kafka topic

kafka-topics --bootstrap-server localhost:9092 --delete --topic topic-message