Database
255 results found
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Lock on session start level with provided keys
Scenario:
Parallel DB updates with transactions on multiple collections that use same documents.
Example: Calculate some common stuff to embed it in extra collections to avoid lookups.Problem:
Lock and timeout on documents uses up valuable time and performance.
Also lock conflicts produce a huge amount of exceptions that need to be handled.Idea:
Key-based sessionsExample:
Session A with Keys 1 and 2 is started.
Session B tries to start with Key 1. Key 1 is locked with Session A. Session B waits till Session A is finished.In this case transaction doesn't start with updating and failing. Waiting…
7 votes -
Should be possible to configure profiling output destination
When enabling database profiling the output is sent to both the system.profile collection and system logs. Logging to a capped collection is fine but spamming the logs on disk is not good.
We have a need to be able to react to changing query patterns quickly, so we have profiling enabled in production on a busy system and we do real-time analysis on the the system.profile collection. This works fine and the performance hit is acceptable but our system logs on disk grows a lot.
Please make it possible to configure if profile logging should go to disk, collection or…
8 votes -
Allow to define access to DBs/collections by prefix or pattern.
Please extend ACL to support prefixes (or regex) in the database name/collection.
Currently only allowed ALL (when empty string provided) or exact db/collection matching when provided.Use case: Several services are using the same cluster but need to be isolated. Every service can get readWriteAnyDatabase but only to databases prefixed by some prefix.
Services need to create new databases on the fly, so it is not possible to define a list of databases upfront.For example - rwRoleForService1 allows "update", "insert", and "remove" operations only on databases prefixed by "service1-" (sevice1-db1, sevice1-db2, ....)
{
role: "rwRoleForService1",
privileges: [
{
{…6 votes -
ARM support
Can we support ARM packages for Debian 11. They are required for bitnami to add ARM support to their mongo charts
15 votes -
support parallel query executions include find(), aggregation()
To use multi-core environment and enhance the query performance w/ a large amount of documents, need a parallel execution.
Sharding or microsharding is not an alternative in this case.2 votes -
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(default 60s)
2 votes -
Raise maximum BSON document size bigger than 16 MB
Per https://www.mongodb.com/docs/manual/reference/limits/#:~:text=The%20maximum%20BSON%20document%20size,MongoDB%20provides%20the%20GridFS%20API, maximum BSON document size is 16 MB. I would like to request this to support bigger sizes like 32 MB, 64 MB or even bigger.
49 votes -
I just wanted to say Good job!!!
Appreciation
2 votes -
How to limit the number of document updates?
Hi
I want to limit the number of document updates in one command.for example
db.users.updateMany(
<filter>,
<update>,
{
limit : 100
}
);https://www.mongodb.com/community/forums/t/how-to-limit-the-number-of-document-updates/102204/3
20 votes -
session
The possibility configure what network or IP the user can be connect in the cluster in the mongo atlas.
1 vote -
Improve Changestream metadata by including userId(who), action/intent (event name).
This can be done by including meta data in the options for C(R)UD operations!
Something like:User.updateOne({ _id }, { $set: { name: "newName" } }, { $meta: { userId: _id, action: "nameUpdated" })This is super useful because now changestream can be used to create event store or audit logs, out of the box. I just have to store all the changestream events from the relevant collections. This also makes event driven architecture in micro services super useful. Developers can use this to publish events directly to a message broker such as kafka, where action would be equivalent to…
1 vote -
Allow disabling auto removal for capped collections
Capped collections work as a circular buffer - when adding new documents after the size limit is reached, old documents are removed.
I would like to have an option for the collection, where this behavior can be changed - instead of removing old documents, the insert should fail with a specific error (eg: collection full). This would allow implementing log-rotation, by creating a new collection whenever the old one is full.
My motivation:
I have two services, one creating documents (events), and another one processing them. I'm looking for a reliable way to:
- process all documents from start, without…1 vote -
add index on oplog collection which will avoid full collection scan where change stream enabled , as of now full scan causing high cpu
add an index on oplog collection for change stream to avoid full collection
1 vote -
placement of mongosh,mongo tools and mongo binary inside core bin
Hi Team,
Hope you are doing great!
Didn't understand the purpose of keeping mongosh,mongo tools and mongo binary separately, can't this be place in a single rpm/tar file so that it can be easy the installation process.
As per the current :
Mongo binary location :/var/lib/mongodb-mms-automation/mongodb-linux-x86_64-6.0.8-ent/bin
Mongo Tools location :
/var/lib/mongodb-mms-automation/mongodb-database-tools-linux-x86_64-100.7.4/bin
Mongosh location :
need to keep this file in separate location and access the mongodh. mongosh-1.10.1-linux-x64.tgz
Thank you
1 vote -
When was last backup/mongodump ran on databases or database backup history
How can get detail of last backup was taken using query. Its very hard to get into log file and see the history of mongodump. Just like other database tool mongodump history can be retrieved via query instead mongo log file.
I know get the detail from ops manager if using enterprise only but what if we are using community edition.
If you include this feature it will very helpful for DBA to get the details juts like other database tools available in market.
1 vote -
Allow rotation of Arbiter TLS certificates when authentication is enabled
Mongo arbiters do not support using db.rotateCertificates(), because they do not possess the internal table of user and role mappings used for authentication.
Add functionality to enable rotation of these certificates.
1 vote -
Exclude PDB files from installation
mongod.pdb is nearly 1.0GB, mongos.pdb - 0.5GB
Since these fils are not necessary for the server to function properly, they should be optional, e.g. provide a checkbox to exclude them during installation.
1 vote -
Tool for score data model
It would be great to have a tool which can scores a data model from a specific database. I mean, I could allows this tool to scan a database model and score this data model based on best practices, patterns and anti patterns. It could also generates a list of problems and suggestions for improvement.
This tool could be used on CI pipelines near to the unit tests and the main goal is to avoid release new features using a bad data model.
2 votes -
Flatten arrays in group stage
Have group operators to flatten document arrays into a single one with or without repeated elements.
So ->
doc1 = {arr: [1,2,3,4], gr: "group"}, doc2 = {arr: [5, 6, 7, 8], gr: "group"}
{$group: {id: "$gr", arrays: {$***: "$arr"} } }
=>
{id: "gr", arrays: [1, 2, 3, 4, 5, 6, 7, 8]}2 votes -
DB Snapshot triggers when RDS Snapshot starts.
Looking for a feature regarding DB Snapshots, so that we can configure a Snapshot Policy to be triggered whenever a specific AWS RDS snapshot starts.
Thank you in advance.
1 vote
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