fix: zadd command override rather than ignore the same member in one times

[guozhihao-224]

fix #236

Summary by CodeRabbit

• Refactor
  • Improved the handling of duplicate members in sorted sets to retain the last occurrence.
  • Enhanced internal processing for better performance while preserving existing functionality.

[coderabbitai]

"""

Walkthrough

The pull request updates the ZAdd method in the Redis class located at src/storage/src/redis_zsets.cc. The method now uses an unordered_map to track members and their scores by iterating over the input vector in reverse order, ensuring the last occurrence of each member is kept. This replaces the previous approach that used an unordered_set and kept the first occurrence. The rest of the method and its signature remain unchanged.

Changes

File(s)	Change Summary
src/storage/.../redis_zsets.cc	Modified the ZAdd method: replaced the unordered_set-based duplicate filtering with an unordered_map that maps members to scores by reverse iteration, keeping the last occurrence of each member.

Sequence Diagram(s)

sequenceDiagram
    participant C as Client
    participant R as Redis::ZAdd
    C->>R: Call ZAdd(key, score_members, ret)
    R->>R: Iterate score_members in reverse
    R->>R: Insert member→score into ms_map if new
    R->>R: Append member and score to filtered_score_members
    R-->>C: Return Status and update ret

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Assessment against linked issues

Objective	Addressed	Explanation
Implement correct duplicate member handling (#236)	✅

Suggested reviewers

• AlexStocks

Poem

I'm a bunny hopping through the code,
Skipping duplicates on my merry road.
With maps instead of sets at play,
My ZAdd sings a brighter day,
A code garden where bugs erode. 🐇🌷
"""

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📥 Commits

Reviewing files that changed from the base of the PR and between 1694b38 and d4e90a1.

📒 Files selected for processing (1)

• src/storage/src/redis_zsets.cc (1 hunks)

🚧 Files skipped from review as they are similar to previous changes (1)

• src/storage/src/redis_zsets.cc

⏰ Context from checks skipped due to timeout of 90000ms (2)

• GitHub Check: build_on_macos
• GitHub Check: build_on_ubuntu

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[marsevilspirit]

为什么修改了文件的权限？

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

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Why did the file permissions be modified?

[marsevilspirit]

check comment

[marsevilspirit]

LGTM!