The Need for Customized Request Limits

Oct 13, 2025 by wbrum.org 93 views

Introduction

Nominatim is a powerful geocoding service that provides accurate and reliable location data. When using a self-hosted Nominatim instance, users often require more flexibility in terms of request limits. The default 1 request per second limit may not be sufficient for applications that require high-frequency geocoding. In this article, we will discuss the importance of customizing the request limit for self-hosted Nominatim and propose a feature request to achieve this.

The Need for Customized Request Limits

When using a self-hosted Nominatim instance, users have more control over the infrastructure and can optimize it for their specific use case. However, the default 1 request per second limit imposed by Nominatim can be restrictive, especially for applications that require high-frequency geocoding. This limit can lead to performance issues, errors, and a poor user experience.

Benefits of Customized Request Limits

Customizing the request limit for self-hosted Nominatim offers several benefits, including:

Improved performance: By increasing the request limit, applications can handle more geocoding requests without experiencing performance issues.
Increased flexibility: Customized request limits allow users to optimize their self-hosted Nominatim instance for their specific use case, reducing the risk of errors and improving the overall user experience.
Better scalability: With a customized request limit, users can scale their self-hosted Nominatim instance to meet the demands of their application, reducing the need for costly infrastructure upgrades.

Proposed Feature Request

To address the need for customized request limits, we propose the following feature request:

Option to set a custom request limit: Provide an option to set a custom request limit for self-hosted Nominatim instances, allowing users to optimize their infrastructure for their specific use case.
Bypass default limit: Allow users to bypass the default 1 request per second limit when using a self-hosted Nominatim instance, providing more flexibility and control over the geocoding process.

Implementation Details

To implement this feature request, the following steps can be taken:

Add a configuration option: Add a configuration option to the Nominatim instance that allows users to set a custom request limit.
Modify the request handling logic: Modify the request handling logic to check for the custom request limit and enforce it accordingly.
Provide documentation: Provide documentation on how to configure and use the custom request limit feature.

Conclusion

Customizing the request limit for self-hosted Nominatim is essential for applications that require high-frequency geocoding. By providing an option to set a custom request limit and bypassing the default limit, users can optimize their infrastructure for their specific use case, improving performance, flexibility, and scalability. We hope that this feature request will be considered and implemented in future versions of Nominatim.

Future Development

In addition to the proposed feature request, there are several other areas where Nominatim can be improved, including:

Improved caching: Implementing improved caching mechanisms to reduce the load on the Nominatim instance and improve performance.
Enhanced security: Enhancing security features to protect against common web attacks and ensure the integrity of the geocoding data.
Better support for large datasets: Providing better support for large datasets and improving the performance of the geocoding process.

By addressing these areas, Nominatim can become an even more powerful and reliable geocoding service, providing accurate and reliable location data to users around the world.

Recommendations

Based on the proposed feature request and future development areas, we recommend the following:

Implement the custom request limit feature: Implement the custom request limit feature to provide users with more flexibility and control over the geocoding process.
Improve caching and security: Improve caching and security features to reduce the load on the Nominatim instance and protect against common web attacks.
Enhance support for large datasets: Enhance support for large datasets and improve the performance of the geocoding process.

Introduction

In our previous article, we discussed the importance of customizing the request limit for self-hosted Nominatim instances. We proposed a feature request to provide an option to set a custom request limit and bypass the default limit. In this article, we will answer some frequently asked questions (FAQs) related to this feature request.

Q: What is the current request limit for self-hosted Nominatim?

A: The current request limit for self-hosted Nominatim is 1 request per second. This limit is imposed by Nominatim to prevent abuse and ensure fair usage of the service.

Q: Why is the default request limit not sufficient for my application?

A: The default request limit may not be sufficient for applications that require high-frequency geocoding. This can lead to performance issues, errors, and a poor user experience. Customizing the request limit can help optimize the geocoding process and improve the overall user experience.

Q: How can I customize the request limit for my self-hosted Nominatim instance?

A: We propose adding a configuration option to the Nominatim instance that allows users to set a custom request limit. This option can be set through the Nominatim configuration file or through a user interface.

Q: What are the benefits of customizing the request limit?

A: Customizing the request limit offers several benefits, including:

Improved performance: By increasing the request limit, applications can handle more geocoding requests without experiencing performance issues.
Increased flexibility: Customized request limits allow users to optimize their self-hosted Nominatim instance for their specific use case, reducing the risk of errors and improving the overall user experience.
Better scalability: With a customized request limit, users can scale their self-hosted Nominatim instance to meet the demands of their application, reducing the need for costly infrastructure upgrades.

Q: How can I bypass the default request limit?

A: We propose allowing users to bypass the default 1 request per second limit when using a self-hosted Nominatim instance. This can be achieved by setting a custom request limit or by using a specific API key or token.

Q: What are the potential risks of customizing the request limit?

A: Customizing the request limit can introduce potential risks, including:

Abuse: Customizing the request limit can make it easier for malicious users to abuse the service.
Overload: Customizing the request limit can lead to an overload of the Nominatim instance, causing performance issues and errors.
Security risks: Customizing the request limit can introduce security risks, such as allowing unauthorized access to the service.

Q: How can I ensure that my self-hosted Nominatim instance is secure?

A: To ensure that your self-hosted Nominatim instance is secure, you should:

Use a secure configuration: Use a secure configuration file and ensure that it is not accessible to unauthorized users.
Implement access controls: Implement access controls to restrict access to the Nominatim instance and prevent abuse.
Monitor usage: Monitor usage of the Nominatim instance to detect and prevent abuse.

Conclusion

Customizing the request limit for self-hosted Nominatim instances is essential for applications that require high-frequency geocoding. By providing an option to set a custom request limit and bypassing the default limit, users can optimize their infrastructure for their specific use case, improving performance, flexibility, and scalability. We hope that this Q&A article has provided valuable insights into the benefits and risks of customizing the request limit.

Future Development

In addition to the proposed feature request, there are several other areas where Nominatim can be improved, including:

Improved caching: Implementing improved caching mechanisms to reduce the load on the Nominatim instance and improve performance.
Enhanced security: Enhancing security features to protect against common web attacks and ensure the integrity of the geocoding data.
Better support for large datasets: Providing better support for large datasets and improving the performance of the geocoding process.

By addressing these areas, Nominatim can become an even more powerful and reliable geocoding service, providing accurate and reliable location data to users around the world.