Release v0.7.0: Complete Job Batching & Bulk Operations

This release completes the comprehensive Job Batching & Bulk Operations feature
and prepares for publication to crates.io.

## Release Updates

### Version
- Bumped version from 0.6.0 to 0.7.0 in Cargo.toml
- Updated README installation examples to reflect v0.7.0

### Documentation
- **NEW**: Added comprehensive batch operations documentation (docs/batch-operations.md)
  - Complete API reference with examples
  - Best practices and performance considerations
  - Troubleshooting guide for common issues
  - Database-specific optimization details
- Updated README to include batch operations in documentation links
- Moved completed feature from ROADMAP.md to implemented features

### CHANGELOG
- Added detailed v0.7.0 release notes highlighting:
  - JobBatch struct and configuration options
  - High-performance bulk database operations (PostgreSQL UNNEST, MySQL chunking)
  - Enhanced worker batch processing with statistics
  - Comprehensive API for batch management
  - 18 new tests and examples
  - Complete backward compatibility

### ROADMAP
- Removed completed Job Batching & Bulk Operations from Phase 1
- Updated implementation priority list
- Next focus: Job Result Storage & Retrieval

## Feature Completion Summary

The Job Batching & Bulk Operations feature is now complete with:
✅ JobBatch struct with flexible configuration
✅ Optimized bulk database operations (PostgreSQL & MySQL)
✅ Enhanced worker batch processing
✅ Comprehensive API for batch management
✅ Full test coverage and examples
✅ Complete documentation

Ready for crates.io publication and production use.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: CodingAnarchy

CHANGELOG.md

@@ -5,6 +5,62 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.7.0] - 2025-06-27
+
+### Added
+- **📦 Comprehensive Job Batching & Bulk Operations**
+  - `JobBatch` struct for creating and managing job batches with configurable batch sizes
+  - Three partial failure modes: `ContinueOnError`, `FailFast`, and `CollectErrors`
+  - Batch validation ensuring all jobs in a batch belong to the same queue
+  - Automatic chunking for large batches to respect database limits (10,000 jobs max)
+  - Batch metadata support for tracking and categorization
+  
+- **🚀 High-Performance Bulk Database Operations**
+  - PostgreSQL implementation using `UNNEST` for optimal bulk insertions
+  - MySQL implementation using multi-row `VALUES` with automatic 100-job chunking
+  - Atomic batch operations with transaction support
+  - New database tables: `hammerwork_batches` for batch metadata and tracking
+  - Batch status tracking with job counts (pending, completed, failed, total)
+  
+- **👷 Enhanced Worker Batch Processing**
+  - `with_batch_processing_enabled()` for optimized batch job handling
+  - `BatchProcessingStats` for comprehensive batch processing metrics
+  - Automatic batch completion detection and status updates
+  - Batch-aware job processing with enhanced monitoring
+  - Success rate tracking with configurable thresholds (>95% for successful batches)
+  
+- **📊 Batch Operations API**
+  - `enqueue_batch()` - Bulk enqueue jobs with optimized database operations
+  - `get_batch_status()` - Real-time batch progress and statistics
+  - `get_batch_jobs()` - Retrieve all jobs belonging to a batch
+  - `delete_batch()` - Clean up completed batches
+  - `BatchResult` with success/failure rates and job error tracking
+  
+- **🧪 Comprehensive Testing & Examples**
+  - 18 new batch-specific tests covering all functionality
+  - `batch_example.rs` demonstrating bulk job operations
+  - `worker_batch_example.rs` showcasing worker batch processing features
+  - Integration tests for both PostgreSQL and MySQL batch operations
+  - Edge case testing for large batches and failure scenarios
+  
+- **📖 Documentation**
+  - Complete batch operations documentation at `docs/batch-operations.md`
+  - Best practices for batch size selection and failure handling
+  - Performance considerations and database-specific optimizations
+  - Troubleshooting guide for common batch processing issues
+
+### Enhanced
+- Extended `DatabaseQueue` trait with batch operation methods
+- Worker event recording now tracks batch-specific metrics
+- Job struct enhanced with optional `batch_id` field
+- Statistics integration for batch job monitoring
+
+### Technical Implementation
+- **Memory Efficient**: Configurable batch sizes to manage memory usage
+- **Network Optimized**: Reduces database round trips from N to 1-10 for N jobs
+- **Type Safe**: Strongly typed batch operations with comprehensive validation
+- **Backward Compatible**: All existing functionality preserved, batching is opt-in
+
 ## [0.6.0] - 2025-06-26
 
 ### Added
@@ -367,6 +423,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ---
 
 ## Release Links
+- [0.7.0](https://github.com/CodingAnarchy/hammerwork/releases/tag/v0.7.0)
+- [0.6.0](https://github.com/CodingAnarchy/hammerwork/releases/tag/v0.6.0)
+- [0.5.0](https://github.com/CodingAnarchy/hammerwork/releases/tag/v0.5.0)
+- [0.4.0](https://github.com/CodingAnarchy/hammerwork/releases/tag/v0.4.0)
+- [0.3.0](https://github.com/CodingAnarchy/hammerwork/releases/tag/v0.3.0)
 - [0.2.2](https://github.com/CodingAnarchy/hammerwork/releases/tag/v0.2.2)
 - [0.2.1](https://github.com/CodingAnarchy/hammerwork/releases/tag/v0.2.1)
 - [0.2.0](https://github.com/CodingAnarchy/hammerwork/releases/tag/v0.2.0)

Cargo.toml

@@ -28,7 +28,7 @@ warp = { version = "0.3" }
 
 [package]
 name = "hammerwork"
-version = "0.6.0"
+version = "0.7.0"
 edition = "2021"
 description = "A high-performance, database-driven job queue for Rust with PostgreSQL and MySQL support, featuring job prioritization, cron scheduling, timeouts, rate limiting, Prometheus metrics, alerting, and comprehensive statistics collection"
 license = "MIT"

README.md

@@ -20,12 +20,12 @@ A high-performance, database-driven job queue for Rust with comprehensive featur
 ```toml
 [dependencies]
 # Default features include metrics and alerting
-hammerwork = { version = "0.6", features = ["postgres"] }
+hammerwork = { version = "0.7", features = ["postgres"] }
 # or
-hammerwork = { version = "0.6", features = ["mysql"] }
+hammerwork = { version = "0.7", features = ["mysql"] }
 
 # Minimal installation
-hammerwork = { version = "0.6", features = ["postgres"], default-features = false }
+hammerwork = { version = "0.7", features = ["postgres"], default-features = false }
 ```
 
 **Feature Flags**: `postgres`, `mysql`, `metrics` (default), `alerting` (default)
@@ -41,6 +41,7 @@ See the [Quick Start Guide](docs/quick-start.md) for complete examples with Post
 - **[Worker Configuration](docs/worker-configuration.md)** - Worker setup, rate limiting, statistics
 - **[Cron Scheduling](docs/cron-scheduling.md)** - Recurring jobs with timezone support  
 - **[Priority System](docs/priority-system.md)** - Five-level priority system with weighted scheduling
+- **[Batch Operations](docs/batch-operations.md)** - High-performance bulk job processing
 - **[Monitoring & Alerting](docs/monitoring.md)** - Prometheus metrics and notification systems
 
 ## Basic Example

ROADMAP.md

@@ -5,22 +5,6 @@ This roadmap outlines planned features for Hammerwork, prioritized by impact lev
 ## Phase 1: High Impact, Low-Medium Complexity
 *Essential features that provide significant value with reasonable implementation effort*
 
-### 📦 Job Batching & Bulk Operations
-**Impact: High** | **Complexity: Low-Medium** | **Priority: High**
-
-Significant performance improvement for high-throughput scenarios.
-
-```rust
-// Process multiple jobs as a single unit
-let batch = JobBatch::new("email_batch")
-    .with_jobs(email_jobs)
-    .with_batch_size(100)
-    .with_partial_failure_handling(PartialFailureMode::ContinueOnError);
-
-// Bulk enqueue operations
-queue.enqueue_batch(jobs).await?;
-```
-
 ### 🔄 Job Result Storage & Retrieval
 **Impact: High** | **Complexity: Medium** | **Priority: High**
 
@@ -295,9 +279,8 @@ let geo_config = GeoReplicationConfig::new()
 Features are ordered within each phase by priority and should generally be implemented in the following sequence:
 
 **Phase 1 (Foundation)**
-1. Job Batching & Bulk Operations
-2. Job Result Storage & Retrieval
-3. Advanced Scheduling Patterns
+1. Job Result Storage & Retrieval
+2. Advanced Scheduling Patterns
 
 **Phase 2 (Advanced Features)**
 1. Job Dependencies & Workflows