ERR only (P)SUBSCRIBE / (P)UNSUBSCRIBE / PING / QUIT allowed in this context

时间 2019-11-11

标签 err subscribe unsubscribe ping quit allowed context 繁體版

原文原文链接

封装Redis发布订阅时，SUB时，又想探测具体Channel的状态，因而执行PUBSUB CHNNALES命令，报
ERR only (P)SUBSCRIBE / (P)UNSUBSCRIBE / PING / QUIT allowed in this context 的错误。
缘由：
发布订阅模式下不能共用一个TCP链接，也不能在其上面执行其余命令 only (P)SUBSCRIBE / (P)UNSUBSCRIBE / PING / QUIT allowed。this

解决方法
一、修改Redis底层源码
二、重开一个链接，进行其余操做，加个Redis链接池。源码

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1. ERR only (P)SUBSCRIBE / (P)UNSUBSCRIBE / PING / QUIT allowed in this context
2. Kotlin: Assignments are not expressions,and only expressions are allowed in this context
3. thymeleafth:onclick传参报错Only variable expressions returning numbers or booleans are allowed in this
4. Write operations are not allowed in read-only mode
5. write operations are not allowed in read-only mode(flushMode.MANUAL)
6. Uncaught (in promise) DOMException: Only secure origins are allowed
7. Only one SparkContext may be running in this JVM
8. javax.naming.NameNotFoundException: Name LoginAuthenticationServlet is not bound in this Context
9. Name xxx is not bound in this Context 总结
10. Using context cancellation in Go

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