Rust Projects with Multiple Entry Points Like CLI and Web
2Rust Multiple Entry Points: Architectural Patterns
Key Points
• Core Concept: Multiple entry points in Rust enable single codebase deployment across CLI, microservices, WebAssembly and GUI contexts
• Implementation Path: Initial CLI development → Web API → Lambda/cloud functions
• Cargo Integration: Native support via src/bin directory or explicit binary targets in Cargo.tomlTechnical Advantages
• Memory Safety: Consistent safety guarantees across deployment targets
• Type Consistency: Strong typing ensures API contract integrity between interfaces
• Async Model: Unified asynchronous execution model across environments
• Binary Optimization: Compile-time optimizations yield superior performance vs runtime interpretation
• Ownership Model: No-saved-state philosophy aligns with Lambda execution contextDeployment Architecture
• Core Logic Isolation: Business logic encapsulated in library crates
• Interface Separation: Entry point-specific code segregated from core functionality
• Build Pipeline: Single compilation source enables consistent artifact generation
• Infrastructure Consistency: Uniform deployment targets eliminate environment-specific bugs
• Resource Optimization: Shared components reduce binary size and memory footprintImplementation Benefits
• Iteration Speed: CLI provides immediate feedback loop during core development
• Security Posture: Memory safety extends across all deployment targets
• API Consistency: JSON payload structures remain identical between CLI and web interfaces
• Event Architecture: Natural alignment with event-driven cloud function patterns
• Compile-Time Optimizations: CPU-specific enhancements available at binary generation
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