如何使用 MONK 设置 TTL 使文件过期？

Question

我阅读了 MongoDB documentation 以了解如何使用生存时间属性使文档过期。

文档说：

To expire data after a specified number of seconds has passed since the indexed field, create a TTL index on a field that holds values of BSON date type... For example, the following operation creates an index on the log_events collection’s createdAt field and specifies the expireAfterSeconds value of 3600 to set the expiration time to be one hour after the time specified by createdAt

db.log_events.createIndex( { "createdAt": 1 }, { expireAfterSeconds: 3600 } )

When adding documents to the log_events collection, set the createdAt field to the current time:

db.log_events.insert( {
   "createdAt": new Date(),
   "logEvent": 2,
   "logMessage": "Success!"
} )

如何使用节点 Monk 来做到这一点？

Answer 1

应该是：

db.log_events.ensureIndex({ "createdAt": 1 }, { expireAfterSeconds: 3600 })

关于 ensureIndex

的文档

Ensures that indexes exist, if it does not it creates it

如何使用 MONK 设置 TTL 使文件过期？

How to set TTL to expire documents using MONK?

javascript

mongodb

node.js

monk