javascript - Query on MongoDB Delete Triggers -

i newbie mongodb.

please me following query:

i using oplogs adding triggers mongodb operation. on doing insert/update operations, receive complete information fields added/updated in collection.

my problem is:

when delete operations in mongodb, oplog triggers received contains object_id.

can please point out example can receive complete information in fields - deleted row in trigger.

thanks

you have fetch document objectid, not possible on current node tailing oplog because time have received delete operation oplog, document gone. believe means have 2 choices:

1. make sure deletes preceded update operation allows see document fields require prior deletion (this make deletes more expensive of course)
2. run secondary slave delay , query node document has been deleted (either directly or using tags).

for number 2, issue having delay long enough guarantee can fetch document , short enough make sure getting date version of document. unless add versioning document check (which getting similar option 1, want update version before deleting), have optimistic, best efforts solution.