---
title: "Overview"
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type: docs
aliases:
- /concepts/rest/overview.html
---
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# RESTCatalog

## Overview

Paimon REST Catalog provides a lightweight implementation to access the catalog service. Paimon could access the
catalog service through a catalog server which implements REST API. You can see all APIs in [REST API]({{< ref "concepts/rest/rest-api" >}}).

{{< img src="/img/rest-catalog.svg">}}

## Key Features

1. User Defined Technology-Specific Logic Implementation
    - All technology-specific logic within the catalog server.
    - This ensures that the user can define logic that could be owned by the user.
2. Decoupled Architecture
    - The REST Catalog interacts with the catalog server through a well-defined REST API.
    - This decoupling allows for independent evolution and scaling of the catalog server and clients.
3. Language Agnostic
    - Developers can implement the catalog server in any programming language, provided that it adheres to the specified REST API.
    - This flexibility enables teams to utilize their existing tech stacks and expertise.
4. Support for Any Catalog Backend
    - REST Catalog is designed to work with any catalog backend.
    - As long as they implement the relevant APIs, they can seamlessly integrate with REST Catalog.

## Conclusion

REST Catalog offers adaptable solution for accessing the catalog service. According to [REST API]({{< ref "concepts/rest/rest-api" >}}) is decoupled
from the catalog service.

Technology-specific Logic is encapsulated on the catalog server. At the same time, the catalog server supports any
backend and languages.

## Token Provider

RESTCatalog supports multiple access authentication methods, including the following:

1. [Bear Token]({{< ref "concepts/rest/bear" >}}).
2. [DLF Token]({{< ref "concepts/rest/dlf" >}}).

## REST Open API

See [REST API]({{< ref "concepts/rest/rest-api" >}}).
