mongodb-trigger:mongodb事件触发器

上传者: 42165508 | 上传时间: 2022-08-22 11:09:05 | 文件大小: 21KB | 文件类型: ZIP
mongodb-trigger 类似关系数据库的触发器,mongodb-trigger同样可以监听操作事件,粒度可以达到字段级别。 使用场景 同步mongodb数据到异构存储,如:mongo -> elasticsearch 业务cache刷新,如:redis中镜像数据 监听数据变化,触发一些业务逻辑 ... 现实原理 实时读取oplog操作日志(副本集的复制靠的也是oplog),转化成相应的事件流输出,通过配置过滤不必要的事件。 使用方式 在"config.json"定义触发条件 { db: "test_db", collection: "user", handler: "org.wzj.mongodb.trigger.UserHandler" } 编写handler现实 package org.wzj.mongodb.trigger;

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