Create comprehensive production-ready Apache HttpClient 4.x usage examples

[andyadc]

Overview

Create a comprehensive guide and code examples for using Apache HttpClient 4.x in production environments. This will demonstrate best practices and cover various common use cases.

Requirements

Basic Configuration Examples

• Connection pooling setup with optimal settings
• Request/response timeout configurations
• Proxy settings
• SSL/TLS configuration with custom trust store
• Custom retry mechanisms
• Connection keep-alive settings

Authentication Examples

• Basic authentication
• Bearer token authentication
• Custom authentication schemes
• Cookie handling

Request/Response Handling

• GET, POST, PUT, DELETE methods
• Form data submission
• Multipart file uploads
• JSON request/response handling
• XML request/response handling
• Streaming large files
• Handling compressed content (gzip)
• Custom header management

Advanced Features

• Request interceptors
• Response handlers
• Connection management
• Thread-safe usage patterns
• Resource cleanup
• Memory management

Error Handling

• Proper exception handling
• Connection timeouts
• Socket timeouts
• Connection pool exhaustion
• SSL/TLS errors

Monitoring and Metrics

• Connection pool metrics
• Request/response timing
• Success/failure rates
• Resource usage monitoring

Performance Optimization

• Connection pooling best practices
• Memory optimization techniques
• Thread pool configuration
• Keep-alive strategy

Expected Deliverables

1. Complete code examples with comments
2. Configuration templates for different scenarios
3. Best practices documentation
4. Common pitfalls and solutions
5. Performance tuning guidelines

Additional Considerations

• All examples should follow Java coding best practices
• Include unit tests for the examples
• Document memory management considerations
• Include logging configurations
• Add performance benchmarks where applicable