This commit introduces several architectural improvements and optimizations across the codebase:
- **Performance & Reliability**:
- Implemented Redis pipelining in `ConversationCache.CacheMessage` to reduce network round-trips.
- Added a circuit breaker to the JPush client to prevent cascading failures.
- Introduced batch deletion and batch member addition capabilities in repositories.
- Added message idempotency support using `client_msg_id` and a Redis-based cache.
- Optimized WebSocket handling with connection limits (total and per-user) and improved error logging.
- **Code Refactoring**:
- Refactored `Router` to use a `RouterDeps` struct, simplifying the constructor and improving maintainability.
- Unified model ID generation logic using new `id_helper.go` (supporting UUID and Snowflake).
- Standardized JSON serialization/deserialization in models using `json_helper.go`.
- Refactored DTO conversion logic, specifically for `UserResponse` (using functional options) and `Report` responses.
- Removed redundant/deprecated DTOs like `PostDetailResponse` and `TradeItemDetailResponse`.
- **Cache Improvements**:
- Enhanced `LayeredCache` with `SetRaw` to avoid double-encoding when promoting values from Redis to local cache.
- Added `DeleteBatch` support to the cache interface.
- **Other Changes**:
- Cleaned up `config.go` by removing redundant default values and explicit environment variable overrides.
- Improved WebSocket registration flow to handle connection limits gracefully.
Add rich message segment support enabling structured content (text, images, votes, mentions) in posts and comments. Includes segments field in models, DTOs, handlers, and services. Also adds @mention notification processing and migrates vote data to embedded segments.
Add admin comment moderation endpoints (single and batch) and introduce a three-tier moderation system (pass/review/block) for content flagged by AI. Content with unclear violations is now held for manual review instead of being auto-rejected. Deleted the legacy audit_service.go in favor of the unified hook-based moderation system.
Implement sensitive word filtering feature with configurable database and Redis
support. Add security enhancements including WebSocket origin validation, improved
password strength requirements, timing attack prevention, and production JWT secret
validation. Add batch operation validation limits and optimize user blocking
queries with subqueries.
BREAKING CHANGE: Password validation now requires minimum 8 characters with uppercase,
lowercase, and digit (was 6-50 characters without complexity requirements)
