top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

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

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

Looking for an answer?  Promote on:
Facebook Share Button Twitter Share Button LinkedIn Share Button

Similar Questions
0 votes
optimization techniques while there are millions of updates and deletes on mongoDB collection through abinito job?

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.

0 votes
MongoDB: update a nested object with {"env":"qa"} in my updated collection with java-driver:

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

{ "_id" : ObjectId("5b052eeff9290437b217b1ed"), "app" : "hike", "group" : [ { "env" : "prod" }, { "env" : "test" } ]}{ "_id" : ObjectId("5b052f36f9290437b217b1ee"), "app" : "viber", "group" : [ { "env" : "prod" }, { "env" : "test" } ]}

0 votes
MongoDB: How to deal with big collection

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).

Yesterday, I tried to identify the number of posts per user meaning that as a result I would like to have the list of author with their number of posts.

To this end, I have used a simple java code... After around 10 hours, I got the result of only 180 users whereas I have more than 500 000 users in my collection. So, using my code I will need months :)

Please can you recommend me some tips to improve the efficiently of my queries.

...