redis - 在 redis 中存储和检索数据

Question

如何将以下结构存储在 redis 中并获得特定的输出:

projects is the main category.
projects has categories each category has a list of data.

projects:catega contains: id: 1 values {id: 123, name: 'bla'}
                          id: 2 values {id: 124, name: 'bla1'}
projects:categb contains: id: 1 values {id: 125, name: 'bla2'}
                          id: 2 values {id: 126, name: 'bla4'}

我希望能够通过选择项目的所有类别及其数据来获得所有的信息，例如:

{catega: [{id...}, {id...}], categb: [{id...}, {id...}]}

Answer 1

Redis 可以存储哈希键而不是复杂的对象，但是，您可以使用下面的解决方法

1- 重组您的对象以使其更简单，例如

代替

project1:
{
catega: 
    [{id: 123, name: 'bla'}, {id: 124, name: 'bla1'}], 
    [{id: 123, name: 'bla'}, {id: 124, name: 'bla1'}]
categb: 
    [{id: 123, name: 'bla'}, {id: 124, name: 'bla1'}], 
    [{id: 123, name: 'bla'}, {id: 124, name: 'bla1'}]
}

成为

project1:
{
categaID123: '{name:bla, age:15, salary:20}',
categaID124: '{name:blo, age:12, salary:21}',

categbID123: '{name:bla, age:15, salary:20}',
categbID124: '{name:bla, age:15, salary:20}',

}

2- 您可以按如下方式设置哈希

hset project2 categorybID123 "{name:bla, age:15, salary:20}"

或者您可以一次设置所有键，但使用 HMSET

3- 您可以一次调用检索数据

hget project2 categorybID123

希望对你有帮助