Redis哈希分页 [英] Redis Hash Pagination

问题描述

我正在使用 Redis Hash ，其中我将学生ID存储为键(非数字)，值是学生数据的POJO.现在我需要重新分页，即我不在乎学生的顺序，但我只想一次性获取一些学生数据.我可以在Redis中做到这一点吗?如果要支持分页，还需要对数据结构进行一些修改，那也是可以的.

P.S.我正在使用 spring-data-redis .但是没有它的解决方案也可以.基本上，我想确定redis是否支持散列的分页.

解决方案

听起来像您在寻找 命令，该命令使您可以使用光标在哈希表中进行分页.它具有与全局键 SCAN 命令相同的界面，因此请查看示例.

我对spring-data-redis不熟悉，但是它可能对此功能有一些不错的包装.否则，请下拉至其运行的任何Redis库，然后直接执行.

I am using the Redis Hash, in which I am storing student id as the key (which is not numeric), the value is POJO of student data. now I need redis-pagination i.e. I don't care about the students' order but I want to fetch only some students data in one go. can I do this in Redis? if for supporting the pagination some modification in the data structure is required that would be ok too.

P.S. I am using spring-data-redis. but the solution without it would be ok too. basically, I want to find out whether redis supports pagination for hashes.

解决方案

Sounds like you are looking for the HSCAN command, which lets you page through a hash using a cursor. It has the same interface as the global key SCAN command, so look there for examples.

I'm not familiar with spring-data-redis but it might have some nice wrapper for this functionality. Otherwise, drop down to whatever redis library it runs on and execute it directly.

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