core: Implementing rate-limiting interceptors using Spring Boot, Bucket4j

[shortthirdman]

Overview

This PR introduces rate-limiting interceptors implemented using Spring Boot and Bucket4j. The primary goal is to enhance API performance and reliability by controlling request rates at the application level.

Key Changes:

• Integrated Bucket4j for efficient rate-limiting with flexible configuration options.
• Developed Spring Boot interceptors to apply rate limits to API endpoints.
• Added customizable settings for rate limits, including burst capacity and refill rates.
• Implemented error handling to manage rate-limit breaches gracefully.

Benefits:

• Improved API resilience under high load.
• Fine-grained control over request throttling.
• Easy configuration and scalability.

Testing:

• Unit tests for interceptor logic and Bucket4j integration.
• Integration tests to verify rate-limiting behavior under simulated load conditions.