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项目运行好好的，redis突然停机，druid却报错。redis恢复之后，druid无法恢复连接，除非重启服务。错误详情如下：
`[20-01-13 13:30:23,515] INFO [orLoop-1-1][] i.l.core.protocol.ConnectionWatchdog[173] - Reconnecting, last destination was /redis的ip:…
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I integrated redis with spring session and spring security 5.5.4 and respected the
An error has occurred
Could not read JSON: The class with org.springframework.security.web.savedrequest.Defaul…
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Want to develop the best crypto products ever, right here in Taiwan, and offer them to millions of users worldwide?
Want to be based in Taiwan but work in a silicon-valley-like environment, and relea…
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本月 24 号，Spring Boot 3 发布。目前 Spring 生态基本都已经发布了适配 Spring Boot 3 的 RC 版 或 M 版。
自己的项目也在进行适配，在新版环境下，Nacos 不会报错，但服务发现和注册功能就已经失效了。服务启动后，可以正常读取配置，但是在服务列表中无法看到服务，当然运行时也无法找到服务。
## 环境：
- Spring Boot 3…
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### Expected behavior
Is it possible to use dynamic map names based on the parameter names in @Cacheable
### Actual behavior
Unable to set ttl and other configurations for dynamic maps
### St…
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# todoList
## Redis
- [x] 1.*底层数据结构，跳表等实现
- [x] 2.有哪些基本类型，使用场景是啥
- [x] 3.*Redis分布式锁
- [x] 4.Redis主从复制、持久化RDB、AOF
- [x] 5.线程模型
- [x] 6.集群、Sentinel
- [x] 7*缓存雪崩、缓存穿透、缓存击穿
## MySQL
- [ ] …
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### Expected behavior
Using Java 16/17 I can connect with a host by host name successfully, just as with Java 8
### Actual behavior
When running the same code with Java 8, I can successfully conn…
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Getting an error
**### Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'org.springframework.statemachine.persist.StateMachineRuntimePersister' …
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```
java.lang.NullPointerException
at com.weibo.api.motan.protocol.rpc.DefaultRpcProtocol$DefaultRpcExporter.(DefaultRpcProtocol.java:83)
at com.weibo.api.motan.protocol.rpc.DefaultRpcProtocol.cr…