Solr vs Swagger UI: What are the differences?

Introduction:
Key differences between Solr and Swagger UI are outlined below:

1. **Purpose**: Solr is a search platform built on Apache Lucene, used for indexing and searching data, whereas Swagger UI is a tool for visualizing and interacting with APIs, primarily used for API documentation and testing.
2. **Functionality**: Solr is designed for full-text search capabilities and server-side search applications, enabling powerful search functionalities like faceted search, whereas Swagger UI focuses on providing a graphical interface for exploring API endpoints and making API requests.
3. **Technology**: Solr is written in Java and widely used for creating powerful search engines, while Swagger UI is primarily a JavaScript library that generates interactive documentation for APIs based on OpenAPI Specification (formerly Swagger Specification).
4. **Usage**: Solr is commonly utilized in enterprise search, e-commerce platforms, and large-scale data search applications, providing scalable and efficient search capabilities, whereas Swagger UI is often used during the API development process to design, document, and test APIs.
5. **Deployment**: Solr is typically deployed as a standalone search server or can be integrated into existing applications as a search component, running as a separate service or module, whereas Swagger UI is integrated into API projects to provide interactive API documentation and testing capabilities within the application itself.
6. **Customization**: Solr allows for extensive customization and configuration of search functionalities, including schema design and relevance tuning, while Swagger UI offers limited customization options for the visual representation of API endpoints and input parameters.

In Summary, Solr and Swagger UI differ in their primary purpose, functionality, technology stack, usage scenarios, deployment methods, and customization options.