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MongoDB Persistence

The MongoDB persistence has to be set up with a URI in the following form (for more details see here):

inet_persistence="mongodb://(<USERNAME>:<PASSWORD>@)<MONGODB SERVER>/<DATABASE>"

It is important to know, that many cloud providers offer a persistence based up on the MongoDB interfaces, e.g. Azure CosmosDB SQL-API. We do not support these third party abstraction layers and advise you to use a directly supported persistence layer instead.

Note: The authentication using <USERNAME>:<PASSWORD> is optional. If the given <DATABASE> does not exist, it will be created.

Note: The following versions of MongoDB are currently supported: 2.6 up to 4.0.
Have a look at https://github.com/mongodb/mongo-java-driver for additional information

Note: You can use the ssl_ca_certs parameter to add additional trusted root certificates.

Note: When using the MongoDB persistence in a docker container, please also define the environment property DEFAULT_CONFIG=System/Default. A cloud-based persistence requires the configuration to be stored in a system scope.

Installation

Using the MongoDB persistence requires additional components to be installed into the plugins/persistence subfolder of the installation. There are pre-made Docker containers in case of a containerized usage.

If the respective files do not yet exist, you have to download them from the public maven repository at:

The MongoDB driver package has to be extracted into the plugins/persistence subfolder. The persistence main jar has to be saved into this directory without extracting it.

Note: You have to navigate and download the version matching your installation.

Note: In addition to the released version, there may be beta versions available: Persistence beta version, MongoDB beta version package

Memory Usage Considerations

The following numbers will allow to get an insight on how much memory is required:

Component Memory used Comment
Configuration 50KB
Event log 50MB Can be reduced in the confirmation settings
User Metadata 10K per User mostly depends on the Avatar size
User Data (uploaded files) Size of compared documents x 3 (for result) Depends on the quota
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Help - MongoDB Persistence