Data Modeling & Indexing

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Rename an existing index

Allow for the possibility of renaming an existing index, without having to drop and recreate it. Let us say a unique index exists in production, it might not be possible to safely drop it. Yet the index name might not be ideal.

Guest over 4 years ago in Data Modeling & Indexing 1 Submitted

8 VOTE

Provide safe canary deployment mechanism for index changes

What problem are you trying to solve? Focus on the what and why of the need you have, not the how you'd like it solved. 1. Unreliable index usage data 2. All-or-nothing risk with hideIndex() No ability to test on a subset of traffic or for a ...

surovskyi.y@ajax.systems surovskyi.y@ajax.systems 2 months ago in Data Modeling & Indexing 1 Will Not Implement

6 VOTE

Extend schema validation to be able to enforce referential integrity between collections

Where a relational database uses 2 tables to store a 1:many "parent - child" relationship between entities, MongoDB mostly stores the child documents in an array file as part of the parent document. This automatically ensures referential integrity...

Guest almost 3 years ago in Data Modeling & Indexing 0 Submitted

6 VOTE

Add expression indexes

An expression index is one where the value being indexed is the result of an expression, like lower casing a string. http://en.wikipedia.org/wiki/Expression_index http://www.postgresql.org/docs/8.1/static/indexes-expressional.html

Guest over 4 years ago in Data Modeling & Indexing 0 Submitted

4 VOTE

Support readOnly in Json Schema Validation

Support the readOnly property for json schema validation to make certain fields immutable (or the entire document) after creation.

Guest over 3 years ago in Data Modeling & Indexing 0 Submitted

4 VOTE

Allow multiple text indexes per collection

MongoDb only allow one text index by collection, in contrast of other index types. This is a limitation that makes it difficult to develop projects with search functionality, for example, if you want to add a text search for advanced users on all...

Guest over 5 years ago in Data Modeling & Indexing 1 Submitted

3 VOTE

Native Support for Date-Only and Time-Only Field Types

### Summary MongoDB currently lacks native field types for **date-only** (e.g., `2025-05-28`) and **time-only** (e.g., `13:45:00`) values. This results in frequent developer confusion, incorrect behavior around time zones, wasted storage, and the...

Guest 6 months ago in Data Modeling & Indexing 0 Submitted

3 VOTE

Validation should support default values

Various users feel that validation should support default values. See, for instance: https://www.mongodb.com/community/forums/t/support-default-value-in-schema-validation/319684 https://www.mongodb.com/community/forums/t/setting-default-values-in-...

Guest 9 months ago in Data Modeling & Indexing 0 Submitted

3 VOTE

TTL index throttling for deletion

To avoid deletion impact, we need to control the quantity and speed of document generations(insert). Need a way to throttle down the deletion quantity per a delete operation. i.e. # of documents per a ttl delete, sleep time between deletions(defa...

Guest about 2 years ago in Data Modeling & Indexing 0 Submitted

3 VOTE

Compound clustered index

Now it is possible to create a clustered index for only one field. Since documents can be arranged in ascending order of multiple fields, I see no reason to disallow a clustered index from being a compound. Expected syntax: ``` create_collection(...

Guest about 3 years ago in Data Modeling & Indexing 0 Submitted

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