diff --git a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastCacheListener.java b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastCacheListener.java
index fe4ef4de..4f054a47 100644
--- a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastCacheListener.java
+++ b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastCacheListener.java
@@ -4,14 +4,12 @@
 import com.hazelcast.core.EntryEvent;
 import com.hazelcast.map.IMap;
 import com.hazelcast.map.listener.EntryUpdatedListener;
-
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationEventPublisher;
-import org.springframework.context.annotation.Bean;
 
 /**
  * This class is intended to be used as bean.
- *
+ * <p>
  * It will listen to changes in the cache, parse them to a CacheUpdateEvent<K, V>
  * and publish the event to the Spring ApplicationEventPublisher.
  *
@@ -20,17 +18,17 @@
  */
 public class HazelcastCacheListener<K, V> implements EntryUpdatedListener<K, V> {
 
-	@Autowired
-	private ApplicationEventPublisher eventPublisher;
+    @Autowired
+    private ApplicationEventPublisher eventPublisher;
 
-	public HazelcastCacheListener(IMap<K, V> map){
-		map.addEntryListener(this, true);
-	}
+    public HazelcastCacheListener(IMap<K, V> map) {
+        map.addEntryListener(this, true);
+    }
 
-	@Override
-	public void entryUpdated(EntryEvent<K, V> entryEvent) {
-		CacheUpdateEvent<K, V> updateEvent = new CacheUpdateEvent<>(entryEvent.getKey(), entryEvent.getOldValue(), entryEvent.getValue());
-		eventPublisher.publishEvent(updateEvent);
-	}
+    @Override
+    public void entryUpdated(EntryEvent<K, V> entryEvent) {
+        CacheUpdateEvent<K, V> updateEvent = new CacheUpdateEvent<>(entryEvent.getKey(), entryEvent.getOldValue(), entryEvent.getValue());
+        eventPublisher.publishEvent(updateEvent);
+    }
 
 }
diff --git a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastReactiveBucket4jCacheConfiguration.java b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastReactiveBucket4jCacheConfiguration.java
index f86e65f8..965aba84 100644
--- a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastReactiveBucket4jCacheConfiguration.java
+++ b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastReactiveBucket4jCacheConfiguration.java
@@ -1,18 +1,15 @@
 package com.giffing.bucket4j.spring.boot.starter.config.cache.hazelcast;
 
-import org.springframework.boot.autoconfigure.condition.*;
-import org.springframework.context.ApplicationEventPublisher;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
 import com.giffing.bucket4j.spring.boot.starter.config.cache.AsyncCacheResolver;
 import com.giffing.bucket4j.spring.boot.starter.config.cache.CacheManager;
 import com.giffing.bucket4j.spring.boot.starter.config.cache.jcache.JCacheBucket4jConfiguration;
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JBootProperties;
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
-
 import com.hazelcast.core.HazelcastInstance;
 import com.hazelcast.map.IMap;
+import org.springframework.boot.autoconfigure.condition.*;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
 
 /**
  * Configures the asynchronous support for Hazelcast. The synchronous support of Hazelcast
diff --git a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastSpringBucket4jCacheConfiguration.java b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastSpringBucket4jCacheConfiguration.java
index 212a4002..6783b21e 100644
--- a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastSpringBucket4jCacheConfiguration.java
+++ b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/hazelcast/HazelcastSpringBucket4jCacheConfiguration.java
@@ -1,20 +1,17 @@
 package com.giffing.bucket4j.spring.boot.starter.config.cache.hazelcast;
 
-import org.springframework.boot.autoconfigure.condition.*;
-import org.springframework.context.ApplicationEventPublisher;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
 import com.giffing.bucket4j.spring.boot.starter.config.cache.AsyncCacheResolver;
 import com.giffing.bucket4j.spring.boot.starter.config.cache.CacheManager;
 import com.giffing.bucket4j.spring.boot.starter.config.cache.SyncCacheResolver;
 import com.giffing.bucket4j.spring.boot.starter.config.cache.jcache.JCacheBucket4jConfiguration;
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JBootProperties;
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
-
 import com.hazelcast.core.HazelcastInstance;
 import com.hazelcast.map.IMap;
 import com.hazelcast.spring.cache.HazelcastCacheManager;
+import org.springframework.boot.autoconfigure.condition.*;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
 
 /**
  * Configures the asynchronous support for Hazelcast. The synchronous support of Hazelcast
diff --git a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/ignite/IgniteBucket4jCacheConfiguration.java b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/ignite/IgniteBucket4jCacheConfiguration.java
index 836388c2..ac746983 100644
--- a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/ignite/IgniteBucket4jCacheConfiguration.java
+++ b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/ignite/IgniteBucket4jCacheConfiguration.java
@@ -1,16 +1,13 @@
 package com.giffing.bucket4j.spring.boot.starter.config.cache.ignite;
 
-import org.springframework.boot.autoconfigure.condition.*;
-import org.springframework.context.ApplicationEventPublisher;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
 import com.giffing.bucket4j.spring.boot.starter.config.cache.AsyncCacheResolver;
 import com.giffing.bucket4j.spring.boot.starter.config.cache.CacheManager;
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JBootProperties;
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
-
 import org.apache.ignite.Ignite;
+import org.springframework.boot.autoconfigure.condition.*;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
 
 @Configuration
 @ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.REACTIVE)
diff --git a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/infinispan/InfinispanBucket4jCacheConfiguration.java b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/infinispan/InfinispanBucket4jCacheConfiguration.java
index b2df486e..47f9d676 100644
--- a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/infinispan/InfinispanBucket4jCacheConfiguration.java
+++ b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/infinispan/InfinispanBucket4jCacheConfiguration.java
@@ -1,16 +1,13 @@
 package com.giffing.bucket4j.spring.boot.starter.config.cache.infinispan;
 
-import org.springframework.boot.autoconfigure.condition.*;
-import org.springframework.context.ApplicationEventPublisher;
-import org.springframework.context.annotation.Bean;
-import org.springframework.context.annotation.Configuration;
-
 import com.giffing.bucket4j.spring.boot.starter.config.cache.AsyncCacheResolver;
 import com.giffing.bucket4j.spring.boot.starter.config.cache.CacheManager;
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JBootProperties;
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
-
 import org.infinispan.manager.CacheContainer;
+import org.springframework.boot.autoconfigure.condition.*;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
 
 @Configuration
 @ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.REACTIVE)
diff --git a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/jedis/JedisBucket4jConfiguration.java b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/jedis/JedisBucket4jConfiguration.java
index 086900dc..9ad11e5e 100644
--- a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/jedis/JedisBucket4jConfiguration.java
+++ b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/jedis/JedisBucket4jConfiguration.java
@@ -6,7 +6,6 @@
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
 import io.github.bucket4j.redis.jedis.cas.JedisBasedProxyManager.JedisBasedProxyManagerBuilder;
 import org.springframework.boot.autoconfigure.condition.*;
-import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import redis.clients.jedis.JedisPool;
diff --git a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/lettuce/LettuceBucket4jConfiguration.java b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/lettuce/LettuceBucket4jConfiguration.java
index aa381702..e9a8d0c3 100644
--- a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/lettuce/LettuceBucket4jConfiguration.java
+++ b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/lettuce/LettuceBucket4jConfiguration.java
@@ -7,7 +7,6 @@
 import io.github.bucket4j.redis.lettuce.cas.LettuceBasedProxyManager;
 import io.lettuce.core.RedisClient;
 import org.springframework.boot.autoconfigure.condition.*;
-import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
diff --git a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/redisson/RedissonBucket4jConfiguration.java b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/redisson/RedissonBucket4jConfiguration.java
index 7d2480e7..35e3b02f 100644
--- a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/redisson/RedissonBucket4jConfiguration.java
+++ b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/redisson/RedissonBucket4jConfiguration.java
@@ -10,7 +10,6 @@
 import org.redisson.command.CommandAsyncExecutor;
 import org.redisson.config.Config;
 import org.springframework.boot.autoconfigure.condition.*;
-import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 
diff --git a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/redisson/RedissonCacheListener.java b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/redisson/RedissonCacheListener.java
index 575e3c85..c86da329 100644
--- a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/redisson/RedissonCacheListener.java
+++ b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/config/cache/redis/redisson/RedissonCacheListener.java
@@ -3,14 +3,12 @@
 import com.giffing.bucket4j.spring.boot.starter.config.cache.CacheUpdateEvent;
 import org.redisson.api.RTopic;
 import org.redisson.api.RedissonClient;
-
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationEventPublisher;
-import org.springframework.context.ApplicationEventPublisherAware;
 
 /**
  * This class is intended to be used as bean.
- *
+ * <p>
  * It will listen to Redisson events on the {cacheName}:update channel
  * and publish these to the Spring ApplicationEventPublisher as CacheUpdateEvent<K, V>
  *
@@ -19,15 +17,15 @@
  */
 public class RedissonCacheListener<K, V> {
 
-	@Autowired
-	private ApplicationEventPublisher eventPublisher;
+    @Autowired
+    private ApplicationEventPublisher eventPublisher;
 
-	public RedissonCacheListener(RedissonClient redisson, String cacheName) {
-		RTopic pubSubTopic = redisson.getTopic(cacheName);
-		pubSubTopic.addListener(CacheUpdateEvent.class, this::onCacheUpdateEvent);
-	}
+    public RedissonCacheListener(RedissonClient redisson, String cacheName) {
+        RTopic pubSubTopic = redisson.getTopic(cacheName);
+        pubSubTopic.addListener(CacheUpdateEvent.class, this::onCacheUpdateEvent);
+    }
 
-	public void onCacheUpdateEvent(CharSequence channel, CacheUpdateEvent<K, V> event) {
-		eventPublisher.publishEvent(event);
-	}
+    public void onCacheUpdateEvent(CharSequence channel, CacheUpdateEvent<K, V> event) {
+        eventPublisher.publishEvent(event);
+    }
 }
diff --git a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/utils/Bucket4JUtils.java b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/utils/Bucket4JUtils.java
index 5fd50345..a8c33c4a 100644
--- a/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/utils/Bucket4JUtils.java
+++ b/bucket4j-spring-boot-starter/src/main/java/com/giffing/bucket4j/spring/boot/starter/utils/Bucket4JUtils.java
@@ -2,11 +2,14 @@
 
 import java.util.Objects;
 
+import lombok.AccessLevel;
+import lombok.NoArgsConstructor;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
 
+@NoArgsConstructor(access = AccessLevel.PRIVATE)
 public class Bucket4JUtils {
 
 	public static ResponseEntity<String> validateConfigurationUpdate(Bucket4JConfiguration oldConfig, Bucket4JConfiguration newConfig){
diff --git a/bucket4j-spring-boot-starter/src/test/java/com/giffing/bucket4j/spring/boot/starter/config/filter/Bucket4JConfigurationTest.java b/bucket4j-spring-boot-starter/src/test/java/com/giffing/bucket4j/spring/boot/starter/config/filter/Bucket4JConfigurationTest.java
index 836f649b..aab1b563 100644
--- a/bucket4j-spring-boot-starter/src/test/java/com/giffing/bucket4j/spring/boot/starter/config/filter/Bucket4JConfigurationTest.java
+++ b/bucket4j-spring-boot-starter/src/test/java/com/giffing/bucket4j/spring/boot/starter/config/filter/Bucket4JConfigurationTest.java
@@ -1,26 +1,20 @@
 package com.giffing.bucket4j.spring.boot.starter.config.filter;
 
-import static org.assertj.core.api.Assertions.assertThat;
-
-import java.util.Collections;
-
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import com.giffing.bucket4j.spring.boot.starter.context.properties.BandWidth;
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
 import com.giffing.bucket4j.spring.boot.starter.context.properties.RateLimit;
-
 import jakarta.validation.Validation;
 import jakarta.validation.Validator;
 import jakarta.validation.ValidatorFactory;
-
-import com.fasterxml.jackson.core.JsonProcessingException;
-import com.fasterxml.jackson.databind.ObjectMapper;
-import io.github.bucket4j.Bandwidth;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.Order;
 import org.junit.jupiter.api.Test;
-import org.mockito.Mock;
-import org.mockito.Mockito;
+
+import java.util.Collections;
+
+import static org.assertj.core.api.Assertions.assertThat;
 
 
 public class Bucket4JConfigurationTest {
@@ -41,33 +35,33 @@ public void setup() {
 	}
 
 	@Test
-	public void setFilterIdTest() {
+	void setFilterIdTest() {
 		config.setId("id");
 		assert(config.getId().equals("id"));
 		validator.validateProperty(config, "id"); //validate that autoconfigure allows string values
 	}
 	@Test
-	public void setFilterIdWithSpacesTest() {
+	void setFilterIdWithSpacesTest() {
 		config.setId(" id ");
 		assert(config.getId().equals("id"));
 		validator.validateProperty(config, "id"); //validate that autoconfigure allows string values
 	}
 
 	@Test
-	public void setFilterIdNullTest() {
+	void setFilterIdNullTest() {
 		config.setId(null);
 		assert (config.getId() == null);
 		validator.validateProperty(config, "id"); //validate that autoconfigure allows null values
 	}
 
 	@Test
-	public void setFilterIdEmptyStringTest(){
+	void setFilterIdEmptyStringTest(){
 		config.setId("");
 		assert (config.getId() == null);
 	}
 
 	@Test
-	public void setFilterIdSpacesTest(){
+	void setFilterIdSpacesTest(){
 		config.setId(" ");
 		assert (config.getId() == null);
 	}
diff --git a/bucket4j-spring-boot-starter/src/test/java/com/giffing/bucket4j/spring/boot/starter/config/filter/RateLimitBandWidthIdTest.java b/bucket4j-spring-boot-starter/src/test/java/com/giffing/bucket4j/spring/boot/starter/config/filter/RateLimitBandWidthIdTest.java
index 01c2296b..e58b8259 100644
--- a/bucket4j-spring-boot-starter/src/test/java/com/giffing/bucket4j/spring/boot/starter/config/filter/RateLimitBandWidthIdTest.java
+++ b/bucket4j-spring-boot-starter/src/test/java/com/giffing/bucket4j/spring/boot/starter/config/filter/RateLimitBandWidthIdTest.java
@@ -24,7 +24,7 @@
 
 import io.github.bucket4j.TokensInheritanceStrategy;
 
-public class RateLimitBandWidthIdTest {
+class RateLimitBandWidthIdTest {
 
     final RateLimitBandWidthIdsValidator validator = new RateLimitBandWidthIdsValidator();
     ConstraintValidatorContext context;
diff --git a/examples/caffeine/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/caffeine/CustomQueryExecutePredicate.java b/examples/caffeine/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/caffeine/CustomQueryExecutePredicate.java
index b3b0ef9d..3ac8c415 100644
--- a/examples/caffeine/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/caffeine/CustomQueryExecutePredicate.java
+++ b/examples/caffeine/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/caffeine/CustomQueryExecutePredicate.java
@@ -1,5 +1,6 @@
 package com.giffing.bucket4j.spring.boot.starter.examples.caffeine;
 
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
 import com.giffing.bucket4j.spring.boot.starter.context.ExecutePredicate;
@@ -7,6 +8,7 @@
 import jakarta.servlet.http.HttpServletRequest;
 
 @Component
+@Slf4j
 public class CustomQueryExecutePredicate extends ExecutePredicate<HttpServletRequest> {
 
 	private String query;
@@ -14,7 +16,7 @@ public class CustomQueryExecutePredicate extends ExecutePredicate<HttpServletReq
 	@Override
 	public boolean test(HttpServletRequest t) {
 		boolean result = t.getParameterMap().containsKey(query);
-		System.out.println("query-parametetr;value:%s;result:%s".formatted(query, result));
+		log.info("query-parametetr;value:%s;result:%s".formatted(query, result));
 		return result;
 	}
 	
diff --git a/examples/caffeine/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/caffeine/DebugMetricHandler.java b/examples/caffeine/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/caffeine/DebugMetricHandler.java
index 9639f732..92793800 100644
--- a/examples/caffeine/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/caffeine/DebugMetricHandler.java
+++ b/examples/caffeine/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/caffeine/DebugMetricHandler.java
@@ -3,6 +3,7 @@
 import java.util.List;
 import java.util.stream.Collectors;
 
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricHandler;
@@ -10,11 +11,12 @@
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricType;
 
 @Component
+@Slf4j
 public class DebugMetricHandler implements MetricHandler {
 
 	@Override
 	public void handle(MetricType type, String name, long tokens, List<MetricTagResult> tags) {
-	System.out.println(String.format("type: %s; name: %s; tags: %s; tokens: %s",
+	log.info(String.format("type: %s; name: %s; tags: %s; tokens: %s",
 				type,
 				name,
 				tags
diff --git a/examples/ehcache/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/ehcache/config/security/SecurityConfig.java b/examples/ehcache/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/ehcache/config/security/SecurityConfig.java
index 5f9424f4..4c6d67f1 100644
--- a/examples/ehcache/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/ehcache/config/security/SecurityConfig.java
+++ b/examples/ehcache/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/ehcache/config/security/SecurityConfig.java
@@ -3,7 +3,6 @@
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.web.builders.HttpSecurity;
-import org.springframework.security.config.annotation.web.configurers.AbstractHttpConfigurer;
 import org.springframework.security.core.userdetails.User;
 import org.springframework.security.core.userdetails.UserDetails;
 import org.springframework.security.core.userdetails.UserDetailsService;
diff --git a/examples/ehcache/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/ehcache/controller/DebugMetricHandler.java b/examples/ehcache/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/ehcache/controller/DebugMetricHandler.java
index 5d64f680..8305a2a4 100644
--- a/examples/ehcache/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/ehcache/controller/DebugMetricHandler.java
+++ b/examples/ehcache/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/ehcache/controller/DebugMetricHandler.java
@@ -3,6 +3,7 @@
 import java.util.List;
 import java.util.stream.Collectors;
 
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricHandler;
@@ -10,11 +11,13 @@
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricType;
 
 @Component
+
+@Slf4j
 public class DebugMetricHandler implements MetricHandler {
 
 	@Override
 	public void handle(MetricType type, String name, long tokens, List<MetricTagResult> tags) {
-		System.out.println(String.format("type: %s; name: %s; tags: %s",
+		log.info(String.format("type: %s; name: %s; tags: %s",
 				type,
 				name,
 				tags
diff --git a/examples/gateway/pom.xml b/examples/gateway/pom.xml
index ca61d12c..c76c368a 100644
--- a/examples/gateway/pom.xml
+++ b/examples/gateway/pom.xml
@@ -51,6 +51,10 @@
 			<groupId>com.bucket4j</groupId>
 			<artifactId>bucket4j-hazelcast</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-devtools</artifactId>
diff --git a/examples/gateway/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/gateway/GatewayMetricHandler.java b/examples/gateway/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/gateway/GatewayMetricHandler.java
index cbacb702..ece19cb7 100644
--- a/examples/gateway/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/gateway/GatewayMetricHandler.java
+++ b/examples/gateway/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/gateway/GatewayMetricHandler.java
@@ -3,6 +3,7 @@
 import java.util.List;
 import java.util.stream.Collectors;
 
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricHandler;
@@ -11,13 +12,14 @@
 
 
 @Component
+@Slf4j
 public class GatewayMetricHandler implements MetricHandler {
 
 	@Override
 	public void handle(MetricType type, String name, long tokens, List<MetricTagResult> tags) {
-		System.out.println(String.format("name: %s;type: %s; tokens: %s", type, name, tokens));
-		System.out.println("\t" + tags.stream().map(mt -> mt.getKey() + ":" + mt.getValue()).collect(Collectors.joining(",")));
-		System.out.println("################");
+		log.info(String.format("name: %s;type: %s; tokens: %s", type, name, tokens));
+		log.info("\t" + tags.stream().map(mt -> mt.getKey() + ":" + mt.getValue()).collect(Collectors.joining(",")));
+		log.info("################");
 		
 	}
 
diff --git a/examples/redis-jedis/pom.xml b/examples/redis-jedis/pom.xml
index 61de3408..78de4b10 100644
--- a/examples/redis-jedis/pom.xml
+++ b/examples/redis-jedis/pom.xml
@@ -47,6 +47,10 @@
             <artifactId>jedis</artifactId>
             <version>${jedis.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
 
         <dependency>
             <groupId>com.redis.testcontainers</groupId>
diff --git a/examples/redis-jedis/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java b/examples/redis-jedis/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java
index 8f8ddcdd..4694e13a 100644
--- a/examples/redis-jedis/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java
+++ b/examples/redis-jedis/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java
@@ -3,17 +3,19 @@
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricHandler;
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricTagResult;
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricType;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
 import java.util.List;
 import java.util.stream.Collectors;
 
 @Component
+@Slf4j
 public class DebugMetricHandler implements MetricHandler {
 
 	@Override
 	public void handle(MetricType type, String name, long tokens, List<MetricTagResult> tags) {
-	System.out.println(String.format("type: %s; name: %s; tags: %s; tokens: %s",
+	log.info(String.format("type: %s; name: %s; tags: %s; tokens: %s",
 				type,
 				name,
 				tags
diff --git a/examples/redis-lettuce/pom.xml b/examples/redis-lettuce/pom.xml
index f9a432e6..dee6d6bd 100644
--- a/examples/redis-lettuce/pom.xml
+++ b/examples/redis-lettuce/pom.xml
@@ -50,6 +50,10 @@
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-pool2</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.redis.testcontainers</groupId>
             <artifactId>testcontainers-redis-junit</artifactId>
diff --git a/examples/redis-lettuce/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java b/examples/redis-lettuce/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java
index 8f8ddcdd..4694e13a 100644
--- a/examples/redis-lettuce/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java
+++ b/examples/redis-lettuce/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java
@@ -3,17 +3,19 @@
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricHandler;
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricTagResult;
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricType;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
 import java.util.List;
 import java.util.stream.Collectors;
 
 @Component
+@Slf4j
 public class DebugMetricHandler implements MetricHandler {
 
 	@Override
 	public void handle(MetricType type, String name, long tokens, List<MetricTagResult> tags) {
-	System.out.println(String.format("type: %s; name: %s; tags: %s; tokens: %s",
+	log.info(String.format("type: %s; name: %s; tags: %s; tokens: %s",
 				type,
 				name,
 				tags
diff --git a/examples/redis-lettuce/src/main/java/com/giffing/bucket4j/spring/boot/starter/TestController.java b/examples/redis-lettuce/src/main/java/com/giffing/bucket4j/spring/boot/starter/TestController.java
index ec520663..68ea4924 100644
--- a/examples/redis-lettuce/src/main/java/com/giffing/bucket4j/spring/boot/starter/TestController.java
+++ b/examples/redis-lettuce/src/main/java/com/giffing/bucket4j/spring/boot/starter/TestController.java
@@ -1,18 +1,14 @@
 package com.giffing.bucket4j.spring.boot.starter;
 
+import com.giffing.bucket4j.spring.boot.starter.config.cache.CacheManager;
+import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
 import com.giffing.bucket4j.spring.boot.starter.utils.Bucket4JUtils;
 import jakarta.validation.ConstraintViolation;
-import jakarta.validation.Valid;
 import jakarta.validation.Validator;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.context.support.DefaultMessageSourceResolvable;
 import org.springframework.http.ResponseEntity;
-import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.annotation.*;
 
-import com.giffing.bucket4j.spring.boot.starter.config.cache.CacheManager;
-import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
-
 import java.util.List;
 import java.util.Set;
 
diff --git a/examples/redis-redisson/pom.xml b/examples/redis-redisson/pom.xml
index e270666a..5938ded3 100644
--- a/examples/redis-redisson/pom.xml
+++ b/examples/redis-redisson/pom.xml
@@ -51,6 +51,10 @@
             <groupId>org.apache.commons</groupId>
             <artifactId>commons-pool2</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+        </dependency>
         <dependency>
             <groupId>com.redis.testcontainers</groupId>
             <artifactId>testcontainers-redis-junit</artifactId>
diff --git a/examples/redis-redisson/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java b/examples/redis-redisson/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java
index 8f8ddcdd..4694e13a 100644
--- a/examples/redis-redisson/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java
+++ b/examples/redis-redisson/src/main/java/com/giffing/bucket4j/spring/boot/starter/DebugMetricHandler.java
@@ -3,17 +3,19 @@
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricHandler;
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricTagResult;
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricType;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
 import java.util.List;
 import java.util.stream.Collectors;
 
 @Component
+@Slf4j
 public class DebugMetricHandler implements MetricHandler {
 
 	@Override
 	public void handle(MetricType type, String name, long tokens, List<MetricTagResult> tags) {
-	System.out.println(String.format("type: %s; name: %s; tags: %s; tokens: %s",
+	log.info(String.format("type: %s; name: %s; tags: %s; tokens: %s",
 				type,
 				name,
 				tags
diff --git a/examples/redis-redisson/src/main/java/com/giffing/bucket4j/spring/boot/starter/TestController.java b/examples/redis-redisson/src/main/java/com/giffing/bucket4j/spring/boot/starter/TestController.java
index b5d04d54..6472f889 100644
--- a/examples/redis-redisson/src/main/java/com/giffing/bucket4j/spring/boot/starter/TestController.java
+++ b/examples/redis-redisson/src/main/java/com/giffing/bucket4j/spring/boot/starter/TestController.java
@@ -1,20 +1,16 @@
 package com.giffing.bucket4j.spring.boot.starter;
 
-import java.util.List;
-import java.util.Set;
-
+import com.giffing.bucket4j.spring.boot.starter.config.cache.CacheManager;
+import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
+import com.giffing.bucket4j.spring.boot.starter.utils.Bucket4JUtils;
 import jakarta.validation.ConstraintViolation;
-import jakarta.validation.Valid;
 import jakarta.validation.Validator;
-
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.http.ResponseEntity;
-import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.annotation.*;
 
-import com.giffing.bucket4j.spring.boot.starter.config.cache.CacheManager;
-import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
-import com.giffing.bucket4j.spring.boot.starter.utils.Bucket4JUtils;
+import java.util.List;
+import java.util.Set;
 
 @RestController
 public class TestController {
diff --git a/examples/webflux-infinispan/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/webflux/MyController.java b/examples/webflux-infinispan/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/webflux/MyController.java
index 2650b7d5..5ca7dfe9 100644
--- a/examples/webflux-infinispan/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/webflux/MyController.java
+++ b/examples/webflux-infinispan/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/webflux/MyController.java
@@ -4,14 +4,10 @@
 import com.giffing.bucket4j.spring.boot.starter.context.properties.Bucket4JConfiguration;
 import com.giffing.bucket4j.spring.boot.starter.utils.Bucket4JUtils;
 import jakarta.validation.ConstraintViolation;
-import jakarta.validation.Valid;
 import jakarta.validation.Validator;
 import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.context.support.DefaultMessageSourceResolvable;
 import org.springframework.http.ResponseEntity;
-import org.springframework.validation.BindingResult;
 import org.springframework.web.bind.annotation.*;
-
 import reactor.core.publisher.Mono;
 
 import java.util.List;
diff --git a/examples/webflux/pom.xml b/examples/webflux/pom.xml
index 84273cf9..d4321459 100644
--- a/examples/webflux/pom.xml
+++ b/examples/webflux/pom.xml
@@ -51,6 +51,10 @@
 			<groupId>com.hazelcast</groupId>
 			<artifactId>hazelcast-spring</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-test</artifactId>
diff --git a/examples/webflux/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/webflux/DebugMetricHandler.java b/examples/webflux/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/webflux/DebugMetricHandler.java
index d417e972..6019d36f 100644
--- a/examples/webflux/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/webflux/DebugMetricHandler.java
+++ b/examples/webflux/src/main/java/com/giffing/bucket4j/spring/boot/starter/examples/webflux/DebugMetricHandler.java
@@ -3,6 +3,7 @@
 import java.util.List;
 import java.util.stream.Collectors;
 
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Component;
 
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricHandler;
@@ -10,11 +11,12 @@
 import com.giffing.bucket4j.spring.boot.starter.context.metrics.MetricType;
 
 @Component
+@Slf4j
 public class DebugMetricHandler implements MetricHandler {
 
 	@Override
 	public void handle(MetricType type, String name, long tokens, List<MetricTagResult> tags) {
-		System.out.println(String.format("type: %s; name: %s; tags: %s",
+		log.info(String.format("type: %s; name: %s; tags: %s",
 				type,
 				name,
 				tags
diff --git a/pom.xml b/pom.xml
index e3bfbe55..242c346c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,7 +44,7 @@
 		<tag>bucket4j-spring-boot-starter-parent-0.3.4</tag>
 	</scm>
 	<properties>
-		<revision>0.10.1</revision>
+		<revision>0.10.2</revision>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>17</java.version>