Learn CRYSTAL with Real Code Examples

Compiled native binaries run fast

Use fibers for lightweight concurrency

Avoid excessive object allocations in hot loops

Use structs for value types to reduce GC overhead

Leverage compile-time macros for repeated patterns

Validate user inputs for web applications

Use HTTPS for network requests

Handle exceptions to prevent leaks

Sanitize data for database insertion

Follow secure coding practices for concurrency

Logging for runtime

Fiber execution tracing

Compile-time warnings and errors

Benchmark hot paths

Monitor web requests in Kemal/Amber apps

Use type inference wisely

Follow Ruby-inspired readable syntax

Write unit tests with Spec

Modularize code for maintainability

Document fiber usage and concurrency