Deserialization failed:

java.lang.IllegalStateException: Failed to execute CommandLineRunner
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:779)
    at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:760)
    at org.springframework.boot.SpringApplication.afterRefresh(SpringApplication.java:747)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1162)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1151)
    at com.lk.acApplication.main(acApplication.java:27)
Caused by: org.springframework.data.redis.serializer.SerializationException: Cannot deserialize; nested exception is org.springframework.core.serializer.support.SerializationFailedException: Failed to deserialize payload. Is the byte array a result of corresponding serialization for DefaultDeserializer?; nested exception is java.io.InvalidClassException: com.lk.base.ac.model.Tenant; local class incompatible: stream classdesc serialVersionUID = -6743567631108323096, local class serialVersionUID = -3998150864330771094
    at org.springframework.data.redis.serializer.JdkSerializationRedisSerializer.deserialize(JdkSerializationRedisSerializer.java:82)
    at org.springframework.data.redis.cache.RedisCache$CacheValueAccessor.deserializeIfNecessary(RedisCache.java:477)
    at org.springframework.data.redis.cache.RedisCache.lookup(RedisCache.java:323)
    at org.springframework.data.redis.cache.RedisCache.get(RedisCache.java:184)
    at org.springframework.data.redis.cache.RedisCache.get(RedisCache.java:133)
    at org.springframework.cache.interceptor.AbstractCacheInvoker.doGet(AbstractCacheInvoker.java:71)
    at org.springframework.cache.interceptor.CacheAspectSupport.findInCaches(CacheAspectSupport.java:537)
    at org.springframework.cache.interceptor.CacheAspectSupport.findCachedItem(CacheAspectSupport.java:503)
    at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:389)
    at org.springframework.cache.interceptor.CacheAspectSupport.execute(CacheAspectSupport.java:327)
    at org.springframework.cache.interceptor.CacheInterceptor.invoke(CacheInterceptor.java:61)
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:656)
    at com.lk.base.ac.dao.TenantDao$$EnhancerBySpringCGLIB$$c5ba8fe5.selectAll(<generated>)
    at com.lk.CacheCommandLineRunner.run(CacheCommandLineRunner.java:35)
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:776)
    ... 6 common frames omitted
Caused by: org.springframework.core.serializer.support.SerializationFailedException: Failed to deserialize payload. Is the byte array a result of corresponding serialization for DefaultDeserializer?; nested exception is java.io.InvalidClassException: com.lk.base.ac.model.Tenant; local class incompatible: stream classdesc serialVersionUID = -6743567631108323096, local class serialVersionUID = -3998150864330771094
    at org.springframework.core.serializer.support.DeserializingConverter.convert(DeserializingConverter.java:78)
    at org.springframework.core.serializer.support.DeserializingConverter.convert(DeserializingConverter.java:36)
    at org.springframework.data.redis.serializer.JdkSerializationRedisSerializer.deserialize(JdkSerializationRedisSerializer.java:80)
    ... 21 common frames omitted
Caused by: java.io.InvalidClassException: com.lk.base.ac.model.Tenant; local class incompatible: stream classdesc serialVersionUID = -6743567631108323096, local class serialVersionUID = -3998150864330771094
    at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:616)
    
    

If you think about it carefully, I put tenant information into redis before, then restart the service, and then get it again

We can see that the root cause is:
local class incompatible: stream classdesc serialVersionUID = – 6743567631108323096, local class serialVersionUID = – 3998150864330771094

Just add the following in tent class:

private static final long serialVersionUID = -6743567631108323096L;