⚡ Bolt: implement blockchain for followers and optimize performance#835
⚡ Bolt: implement blockchain for followers and optimize performance#835RohanExploit wants to merge 1 commit into
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This PR implements cryptographic integrity chaining for the GrievanceFollower model to ensure auditability, and introduces several performance optimizations across the backend. Key changes: - Implement SHA-256 integrity hashes for GrievanceFollower records. - Add O(1) last-hash caching for follower creation. - Optimize TrendAnalyzer keyword extraction by pre-compiling regex and batching string operations. - Streamline RAG retrieval by removing redundant code and using bitwise set operations.
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🙏 Thank you for your contribution, @RohanExploit!PR Details:
Quality Checklist:
Review Process:
Note: The maintainers will monitor code quality and ensure the overall project flow isn't broken. |
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Pull request overview
This PR extends the existing “blockchain-style” integrity chaining approach to GrievanceFollower records (including a new verification endpoint), and applies small performance cleanups to the TrendAnalyzer keyword extraction and CivicRAG retrieval hot path.
Changes:
- Add
integrity_hash/previous_integrity_hashtoGrievanceFollowerand compute chained hashes when following a grievance. - Add a follower integrity verification endpoint (
/grievances/follower/{follower_id}/blockchain-verify). - Optimize TrendAnalyzer tokenization (precompiled regex + single lowercase pass) and remove redundant work in
rag_service.retrieve().
Reviewed changes
Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.
Show a summary per file
| File | Description |
|---|---|
| backend/trend_analyzer.py | Speeds up keyword extraction by reducing per-issue string operations and using a precompiled tokenizer regex. |
| backend/routers/grievances.py | Computes and stores follower integrity hashes, updates a last-hash cache, and introduces a follower blockchain verification endpoint. |
| backend/rag_service.py | Removes redundant tokenization / duplicate early-exit and uses & for set intersection. |
| backend/models.py | Adds integrity chaining columns to GrievanceFollower. |
| backend/cache.py | Adds follower_last_hash_cache for last-hash reuse. |
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| prev_hash = follower_last_hash_cache.get("last_hash") | ||
| if prev_hash is None: | ||
| # Cache miss: Fetch only the last hash from DB | ||
| prev_follower = db.query(GrievanceFollower.integrity_hash).order_by(GrievanceFollower.id.desc()).first() | ||
| prev_hash = prev_follower[0] if prev_follower and prev_follower[0] else "" |
| else: | ||
| is_valid = (computed_hash == follower.integrity_hash) | ||
| message = ( | ||
| "Integrity verified. This follower record is cryptographically sealed." | ||
| if is_valid | ||
| else "Integrity check failed! The record data does not match its cryptographic seal." | ||
| ) |
![cubic-dev-ai[bot]](https://avatars.githubusercontent.com/in/1082092?s=60&v=4){kind=small}
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1 issue found across 5 files
Prompt for AI agents (unresolved issues)
Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.
<file name="backend/routers/grievances.py">
<violation number="1" location="backend/routers/grievances.py:295">
P1: Using process-local cached `last_hash` as the chain head can generate stale/incorrect follower hash links under multi-worker writes or deletes.</violation>
</file>
Reply with feedback, questions, or to request a fix.
Re-trigger cubic
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| # Blockchain feature: calculate integrity hash for the follower record | ||
| # Performance Boost: Use thread-safe cache to eliminate DB query for last hash | ||
| prev_hash = follower_last_hash_cache.get("last_hash") |
There was a problem hiding this comment.
P1: Using process-local cached last_hash as the chain head can generate stale/incorrect follower hash links under multi-worker writes or deletes.
Prompt for AI agents
Check if this issue is valid — if so, understand the root cause and fix it. At backend/routers/grievances.py, line 295:
<comment>Using process-local cached `last_hash` as the chain head can generate stale/incorrect follower hash links under multi-worker writes or deletes.</comment>
<file context>
@@ -290,14 +290,32 @@ def follow_grievance(
+ # Blockchain feature: calculate integrity hash for the follower record
+ # Performance Boost: Use thread-safe cache to eliminate DB query for last hash
+ prev_hash = follower_last_hash_cache.get("last_hash")
+ if prev_hash is None:
+ # Cache miss: Fetch only the last hash from DB
</file context>
⚡ Bolt: implement blockchain for followers and optimize performance
💡 What:
🎯 Why:
📊 Impact:
🔬 Measurement:
PR created automatically by Jules for task 16918386336739064310 started by @RohanExploit
Summary by cubic
Implemented blockchain-style integrity chaining for grievance followers and optimized keyword extraction and RAG retrieval for faster performance. This adds auditability to follower records and reduces CPU work in hot paths.
New Features
integrity_hashandprevious_integrity_hashtoGrievanceFollowerwith SHA-256 chaining./grievances/follower/{follower_id}/blockchain-verifyfor O(1) integrity checks.follower_last_hash_cacheto avoid a DB read when creating the next chained follower.Performance
\w+tokenization.&for intersection to cut overhead.Written for commit 7abf841. Summary will update on new commits.