A regression was reported to a project I maintain which connects to redis through Symfony Cache wrapping a Predis client, in which a ERR invalid cursor error was returned by Predis when trying to scan keys for a specific pattern.After some investigation I found out the issue was reproducible ...
(error) ERR invalid cursor > sscan myset 0 match o* 1) "0" 2) 1) "one" > sscan myset 0 match * 1) "0" 2) 1) "one" 2) "two" > sscan myset 0 match * count 1 1) "2" 2) 1) "one" > sscan myset1 0 match "{'i': '[1-9][0-9][0-9]*'}" 1) "0" ...
导致第二次用scan遍历时候,游标(cursor)参数传入错误。即 redis.clients.jedis.exceptions.JedisDataException: ERR invalid cursor。 以下为问题的前因后果 遍历问题 用keys test* 命令可以返回redis中所有的以test开头的key。但是会引起问题就是卡顿,因为redis是单线程执行,而keys是要拿所有的key来做比对。实际测试当...
http://redis.io/commands/scan 实验如下: $ redis-cli -h [host] -p8379>smembers myset1)"one"2)"two"> sscan myset o*(error) ERR invalid cursor> sscan myset0match o*1)"0"2)1)"one"> sscan myset0match *1)"0"2)1)"one"2)"two"> sscan myset0match * count11)"2"2)1)"...
此篇以scan命令为例。 命令入口 /* The SCAN command completely relies on scanGenericCommand. */ void scanCommand(client *c) { unsigned long cursor; if (parseScanCursorOrReply(c,c->argv[1],&cursor) == C_ERR) return; scanGenericCommand(c,NULL,cursor); ...
http://redis.io/commands/scan 实验如下: $ redis-cli -h [host] -p 8379 > smembers myset 1) "one" 2) "two" > sscan myset o* (error) ERR invalid cursor > sscan myset 0 match o* 1) "0" 2) 1) "one" ...
Redis的过滤器（SCAN）功能 在写另⼀篇⽂章（）的时候，涉及到过滤器(filter)功能。以前没有接触过，整理如下。主要参考这两篇：实验如下：$ redis-cli -h [host] -p 8379 > smembers myset 1) "one"2) "two"> sscan myset o* (error) ERR invalid cursor > sscan myset 0 match o* 1) ...
redis会周期性的把更新的数据写入磁盘或者把修改操作写入追加的记录文件,并且在此基础上实现了master-slave(主从)同步。 免费和开源!是当下最热门的 NoSQL技术!也被人们称之为结构化数据库! Redis能干嘛? 1、内存存储、持久化,内存中是断电即失,所以说持久化很重要(rdb、aof) ...
ERR invalid cursor returned when calling $predisClient->scan(null, ...) while using Redis 7.4 predis/predis#1488 acelayaremoved blockedIssues with some external dependency preventing to work on them on Nov 3, 2024 acelaya commented on Nov 3, 2024 acelayaon Nov 3, 2024 Member I'm unbloc...
The SCAN command runs in an infinite loop or returns empty results Common Redis errors ERR illegal address Possible cause: The IP address of your client is not added to a whitelist of theTairinstance. Solution: Add the IP address of your client to a whitelist of theTairinstance. For more ...