refactor: abstract redis cache param for code cleanliness

[joshydavid]

Description

What type of PR is this?

• 🍕 Feature
• 🐛 Bug Fix
• 📝 Documentation Update
• 🎨 Style
• 👨🏻‍💻 Code Refactor
• 🔥 Performance Improvements
• ✅ Test
• 🤖 Build
• 🔁 CI
• 📦 Chore (Release)
• ⏩ Revert

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[Copilot]

Pull Request Overview

This PR refactors Redis cache annotation parameters to improve code maintainability by extracting the hardcoded #userId parameter into a constant. This eliminates duplicate string literals and centralizes cache parameter definitions.

• Introduces a new constant CACHE_PARAM in the RedisCacheKey class to represent the #userId cache key parameter
• Updates @Cacheable annotations in service implementations to use the new constant instead of hardcoded strings

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
backend/src/main/java/com/bi/constant/RedisCacheKey.java	Adds new CACHE_PARAM constant for cache key parameter
backend/src/main/java/com/bi/service/impl/RecipeServiceImpl.java	Updates @Cacheable annotation to use the new constant
backend/src/main/java/com/bi/service/impl/CoffeeListingServiceImpl.java	Updates @Cacheable annotation to use the new constant

Comments suppressed due to low confidence (1)

backend/src/main/java/com/bi/constant/RedisCacheKey.java:8

• [nitpick] The constant name CACHE_PARAM is too generic. Consider a more descriptive name like USER_ID_CACHE_KEY or USER_ID_PARAM to clearly indicate this parameter is specifically for user ID-based caching.

    public static final String CACHE_PARAM = "#userId";

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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