Database

Performance problem with compound index using doubles, with range filtering

It looks like there may be a problem when using doubles in a compound index and using range-test filters against all of them in a query. The problem we see from the explain plans is that far more keys are being examined that there should be and th...

Guest almost 6 years ago in Database 0 Submitted

1 VOTE

Avoid truncating the query on the Atlas profiler or system.profile collection

Slow running queries that are captured in system.profile collection or on profiler page of Atlas are truncated if the query is too long. As an Application DBA, it would be difficult to analyse the query without figuring out the actual query. The c...

Guest almost 3 years ago in Performance & Optimization 0 Submitted

2 VOTE

Making Elections Faster.

Election is an expensive operation. We can avoid the elections if we can enforce some priority-based ordering on who shall become primary if the current primary fails. Specifically, we can keep a node with second highest priority in the data cente...

Guest almost 6 years ago in Database 0 Submitted

2 VOTE

Support for wildcards in permission parameters

Support for wildcards or maybe even regular expressions in the database/collection name of a permission for a custom role. We have a multi tennant setup, by storing every customer's data in its own database on the cluster. The applications we bui...

Guest almost 6 years ago in Database 0 Submitted

1 VOTE

Expose individual command execution time

Many MongoDB drivers currently expose events (CommandSucceededEvent say) which provide an elapsed time. However, that elapsed time is the round-trip time, which is not super useful as that can be measured by a programmer manually. It would be neat...

Guest almost 3 years ago in Storage & Transactions 0 Submitted

1 VOTE

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