37 lines
17 KiB
Markdown
37 lines
17 KiB
Markdown
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---
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title: 'CVAT Architecture'
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linkTitle: 'CVAT Architecture'
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weight: 1
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description: 'Description of CVAT architecture and components'
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---
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This guide is designed to provide a comprehensive overview of the architecture and components
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of the CVAT and to illustrate how each component interacts within the system.
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| Domain | Component | Functionality | Description |
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| ----------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
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| **Analytics** | Vector | Event processing | There are several components that process events (backend, frontend, web UI). All events are sent to a single point - Vector, where they are processed and then redirected to ClickHouse. For more information, see {{< ilink "/docs/administration/advanced/analytics" "Analytics" >}}. |
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| | ClickHouse | Event database | Stores events. For more information, see {{< ilink "/docs/administration/advanced/analytics" "Analytics" >}}. |
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| | Grafana | Dashboards | Data based on the web interface. For more information, see {{< ilink "/docs/administration/advanced/analytics" "Analytics" >}}. |
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| **Data storage NFS** | RVVX access mode storage is required in case of multi-node deployment. Available with different types of storages: <br><br><li> AWS: Amazon Elastic File System (EFS)<li>Azure: Azure Files with NFS <li>GCP: Filestore NFS | Contains data required for CVAT operations | It is necessary to have the capability for multiple mounting (across several nodes) in RWX mode. For more information, see {{< ilink "/docs/administration/advanced/k8s_deployment_with_helm" "K8 Deployment with Helm" >}} |
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| **Data cache** | Apache kvrocks | Used for data caching (queries and search). Suitable for environments that require frequent database queries. | [Apache Kvrocks](https://kvrocks.apache.org/) |
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| **Job queue** | Redis | Queue manager | |
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| **Database** | PostgreSQL | Database | A database where data is stored in a structured form. |
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| **CVAT.ai Components** | Ingress Controller (can be disabled) | Routing traffic. | {{< ilink "/docs/administration/advanced/k8s_deployment_with_helm" "CVAT deployment on Kubernetes with Helm" >}} |
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| | Authorization | {{< ilink "/docs/manual/advanced/user-roles" "Authorization service based on Open Policy Agent." >}} |
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| **Backend CVAT** | Backend | Main framework | Main engine, uses Django + Django DRF. |
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| **Workers** | Import Worker | Everything related to loading data - creating tasks, uploading annotations, etc. | |
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| | Export Worker | Everything related to exporting data - exporting results, creating dumps, etc. | |
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| | Annotation Worker | Auto-annotation tasks. | |
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| | Utils Worker | Responsible for tracking various file changes and more. | |
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| | Analytics Report | Reports and analytics that are displayed in the CVAT interface. | |
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| | Quality Report | Analysis and reports on data quality. | |
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| | Webhook Worker | Manages webhooks. | |
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| Auto annotation | Auto Annotation Nucio | Microservice application, used for auto annotation. | {{< ilink "/docs/administration/advanced/k8s_deployment_with_helm#optional-enable-auto-annotation-feature" "How to enable auto annotation feature." >}} |
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