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How to automatically delete MongoDB documents after a certain time with TTL indexes
08 July,2021 by Rambler
Question: We have event log data going into a MongoDB collection. There is no requirement to keep this data beyond 60 days. Is there a way of automating the process to delete the rows , without building procedures to manage the data deleted.
Answer: I'd recommend you use TTL indexes for this type of problem. The TTL (Time to Live) index is based on a single-field .
As part of using a TTL index consider the imapct of rolling this data out of the collection. How critical is the data?
This example creates an index on the "myeventlog" collection - changeDate field. The row will be deleted 1 hr (3600 secs) after the "changeDate"
db.myeventlog.createIndex( { "changeDate": 1 }, { expireAfterSeconds: 3600 } )
Read more on MongoDB
How to read MongoDB system log file
Author: Rambler (http://www.dba-ninja.com)
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