Pet store API releases

Release v1.1.0 - "Scalable Paws" (1/28/2025)

This release focuses on enhancing the scalability and security of the Petstore API.

Improved Rate Limiting: Implemented a more robust rate limiting mechanism to prevent abuse and ensure fair usage across all clients.
Enhanced Data Validation: Added stricter input validation to prevent injection attacks and improve data integrity.
Performance Boost: Refactored several core API functions to improve response times by up to 20% under heavy load.
Dependency Updates: Updated all third-party libraries to their latest stable versions, addressing known security vulnerabilities.

Webhook Support: Added support for webhooks, allowing clients to receive real-time notifications when pet status changes (e.g., new pet added, order placed).
GraphQL Endpoint (Beta): Introduced a beta GraphQL endpoint alongside the existing REST API for more flexible data querying.

Fixed an issue where image uploads were failing for certain file types.
Resolved a bug that caused incorrect stock levels to be displayed for store items.
Addressed a cross-site scripting (XSS) vulnerability in the user profile page.

Clients using the webhook feature must update their subscription URLs to the new endpoint /webhooks/pets.
GraphQL endpoint is currently in beta and may undergo breaking changes in future releases.

This release focuses on improving the functionality and reliability of the order management system.

Order Status Transitions: Implemented a more robust state machine for order status transitions, preventing invalid transitions (e.g., shipping an order before it's confirmed).
Enhanced Error Logging: Improved error logging throughout the order processing pipeline for easier debugging and troubleshooting.
Payment Integration (Mock): Added a mock payment integration to simulate real-world payment processing scenarios.

Order Cancellation API: Introduced a new API endpoint /store/order/{orderId}/cancel to allow users to cancel their orders before shipment.
Discount Code Support: Added support for discount codes during order placement.

Fixed a bug where order confirmation emails were not being sent consistently.
Resolved an issue where the total order amount was not being calculated correctly for orders with multiple items.
Addressed a concurrency issue that could lead to duplicate order creation under heavy load.

The initial launch of the Petstore API, marking the establishment of core functionalities.

Implemented RESTful endpoints for basic CRUD operations on pets (/pet), store orders (/store), and user accounts (/user).
Supported authentication via API keys.
Included comprehensive Swagger UI documentation for easy API exploration.
Provided a basic data model for pets (name, category, status), orders (petId, quantity, shipDate, status), and users (username, email, password).
Implemented basic error handling and validation.

This is the initial public release of the Swagger Petstore API. We welcome feedback and suggestions from the community.