写入 Redis 排序集

在下面的示例中,数据是从名为invoice并写入 Redis 排序集。这connection是一个可选参数,它引用config.yaml.什么时候 您指定data_type参数,它会覆盖系统范围的设置target_data_type定义于config.yaml.

写入排序集时,必须提供两个附加参数memberscore.这些选项指定将用作成员的字段名称,以及用于将元素添加到排序集的分数。在这种情况下,结果将是名为invoices:sorted基于 key 表达式,每个 Set 成员的过期时间为 100 秒。如果您不提供expire参数,则密钥永远不会过期。

source:
  server_name: chinook
  schema: public
  table: invoice
output:
  - uses: redis.write
    with:
      connection: target
      data_type: sorted_set
      key:
        expression: "`invoices:sorted`"
        language: jmespath
      args:
        score: Total
        member: InvoiceId 
      expire: 100      

Since sorted sets in Redis are inherently sorted, you can easily get the top N invoices by total invoice amount using the command below (the range 0..9 gets the top 10 invoices):

ZREVRANGE invoices:sorted 0 9 WITHSCORES
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