import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;
import java.time.Duration;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import java.util.Optional;
import java.util.concurrent.TimeUnit;
import java.util.function.Consumer;
import java.util.function.Function;
import org.springframework.cache.support.NullValue;
import org.springframework.dao.PessimisticLockingFailureException;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheWriter;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.RedisStringCommands;
import org.springframework.data.redis.core.types.Expiration;
import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

public class CustomRedisCacheWriter implements RedisCacheWriter {
    private final RedisConnectionFactory connectionFactory;
    private final Duration sleepTime;
    CustomRedisCacheWriter(RedisConnectionFactory connectionFactory) {
        this(connectionFactory, Duration.ZERO);
    }

    CustomRedisCacheWriter(RedisConnectionFactory connectionFactory, Duration sleepTime) {

        Assert.notNull(connectionFactory, "ConnectionFactory must not be null!");
        Assert.notNull(sleepTime, "SleepTime must not be null!");
        this.connectionFactory = connectionFactory;
        this.sleepTime = sleepTime;
    }

    @Override
    public void put(String name, byte[] key, byte[] value, @Nullable Duration ttl) {

        Assert.notNull(name, "Name must not be null!");
        Assert.notNull(key, "Key must not be null!");
        Assert.notNull(