1-800-477-6473 Ready to Talk?

Feedback

Did this article resolve your question/issue?

Article

Would joins on MongoDB collections negatively impact performance?

Information

Title	Would joins on MongoDB collections negatively impact performance?

URL Name	would-joins-on-mongodb-collections-negatively-impact-performance

Article Number	000128916

Environment	Product: Connect for JDBC MongoDB driver Version: 5.1 O/S: Java Database: MongoDB Application: N/A

Question/Problem Description

Would joins on MongoDB collections negatively impact performance?

Steps to Reproduce

Clarifying Information

Error Message

Defect Number

Enhancement Number

Cause

Resolution

JOIN performance will depend on what is being joined.

Joining mapped tables that exist natively within the same collection should work well, depending on the join conditions.

Joining across collections needs to be done by the driver on the client side, in some cases this requires the driver to bring back much more data than is eventually returned to the application.

So, joining across collections will tend to be slower performing than joining within a collection. However, the conditions of those joins is going to play a role in their performance.

Workaround

Notes

Last Modified Date	8/22/2018 8:59 PM

Files

Disclaimer

The origins of the information on this site may be internal or external to Progress Software Corporation (“Progress”). Progress Software Corporation makes all reasonable efforts to verify this information. However, the information provided is for your information only. Progress Software Corporation makes no explicit or implied claims to the validity of this information.

Any sample code provided on this site is not supported under any Progress support program or service. The sample code is provided on an "AS IS" basis. Progress makes no warranties, express or implied, and disclaims all implied warranties including, without limitation, the implied warranties of merchantability or of fitness for a particular purpose. The entire risk arising out of the use or performance of the sample code is borne by the user. In no event shall Progress, its employees, or anyone else involved in the creation, production, or delivery of the code be liable for any damages whatsoever (including, without limitation, damages for loss of business profits, business interruption, loss of business information, or other pecuniary loss) arising out of the use of or inability to use the sample code, even if Progress has been advised of the possibility of such damages.

Progress, Telerik, Ipswitch, Chef, Kemp, Flowmon and certain product names used herein are trademarks or registered trademarks of Progress Software Corporation and/or one of its subsidiaries or affiliates in the U.S. and/or other countries. See Trademarks for appropriate markings.