Generics
Generic JSON API Response Wrapper
Generic Map, Filter, and Reduce
Generic Set Backed by Map
Generic Thread-Safe Stack
Generic In-Memory Repository
Generic Map Value-Size Validator
Type-Safe Generic Transformation Pipeline
Thread-Safe Generic Queue
Context Graceful Shutdown
Request-Scoped Request-ID via Context
Timeout Wrapper With context.WithTimeout
Graceful HTTP Server Shutdown
Ticker Worker With Context Cancellation
Graceful Shutdown With Signal Trapping
Deadline-Aware Three-Stage Pipeline
Context-Aware Trace-ID Propagation
Concurrency Primitives Synchronization
Channel-Based Concurrency Semaphore
Coordinate Workers With sync.WaitGroup
Lazy Singleton With sync.Once
Buffer Pool With sync.Pool
Thread-Safe Buffer Without WaitGroup
Batched Producer-Consumer Queue
Worker Pools Task Orchestration
Multi-Error Aggregator With errors.Join
Worker Pool With Graceful Shutdown
Concurrent URL Status Checker
First Result Wins With Cancellation
Concurrent Fetch With errgroup
Singleflight Call Deduplication
Serialization Reflection
Stringer for a Custom Enum
Custom MarshalJSON for User
Struct Tag Validator via Reflection
Struct To Map With reflect
Custom Timestamp Marshaling to Unix Millis
Flexible Date UnmarshalJSON
Multi-Field Sort With sort.Interface
Reflection-Based Dependency Injection Container
Channels Pipelines
Channel Ping-Pong With Cancellation
Drain Channel With select and time.After
Fan-In Channel Multiplexer
Priority Channel With Coordinator Goroutine
Composable Channel Pipeline Stages
Rate Limiting Resilience
Generic Retry With Exponential Backoff
Debounce Function With Timers
Token Bucket Rate Limiter
Retrying HTTP RoundTripper
Per-IP Rate Limiter Middleware
Size-Or-Time Batch Flusher
Fixed-Size Connection Pool With Timeout
Concurrency-Safe Circuit Breaker
Io Readers Writers
Counting io.Reader Wrapper
Streaming Keyword Counter With bufio.Scanner
Rate-Limited io.Writer Wrapper
Http Transport
Request Logging Middleware
Stream Large File With io.Copy
JSON CRUD Handler With Status Codes
HTTP Middleware Chaining Pipeline
Errors Grpc Testing Caching
Custom Error Type With Metadata
Custom ValidationError With errors.As
Table-Driven Tests With Mocked Dependency
Thread-Safe TTL Cache With Generics
gRPC Unary Server Interceptor
Server-Streaming Handler With Cancellation