Shiro cannot clear authentication information using clearCachedAuthenticationInfo

use this.clearCachedAuthenticationInfo () to pass in tokens, and also execute this.clearCachedAuthorizationInfo () operation to empty the authorization information. The above two operations are the same principals . In Debug, it is found that the return value of this.getAvailableAuthenticationCache () in clearCachedAuthenticationInfo is NULL:

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Spring java springboot shiro redis
Mar.05,2021

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MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e86db6-e0c.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e86db6-e0c.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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