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MongoDB: Is there any problem that collection name starts with "."

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MongoDB: Is there any problem that collection name starts with "."
posted Sep 27, 2017 by anonymous

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Please let me know the optimization techniques which can be used while there are millions of updates and deletes on mongoDB database collection through abinito job.
I am using mongodb bulk updates currently still performance is not up to mark, also there are multiple threads in abinitio job.

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My collection is like this, but I want to update a nested object with {"env":"qa"} in my updated collection with java-driver:

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Recently, I am involved in a project where I have a collection of posts (comments). In this collection, I have around 20 millions posts where each document contains some information about each post (id, URL, content, author, likes, dislikes).

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