Programming language developed by Google offering simplicity, performance and native concurrency. Minimalist architecture with fast compilation, goroutines for concurrency, and complete standard library to build REST APIs, microservices and high-performance backend applications.
Simple and concise syntax with ultra-fast compilation
Goroutines and channels for native and lightweight concurrency
Rich standard library (net/http, encoding/json, testing)
Optimized garbage collector and low memory footprint
Static compilation producing self-contained binaries
Interfaces and duck typing for flexibility without inheritance
Native testing with go test, benchmarks and race detector
Web frameworks (Gin, Echo, Fiber) and ORMs (GORM, sqlx)
Explicit error handling with error checking pattern
Simplified deployment (Docker, Kubernetes) with static binaries
The most important concepts to understand this technology and ace your interviews
Go basics: types, variables, functions, packages, imports
Structs, methods, interfaces and composition (embedding)
Goroutines: go keyword, concurrency vs parallelism, scheduler
Channels: buffered/unbuffered, select, range, close, patterns
Error handling: error type, wrapping errors, panic/recover
Pointers: &, *, pass by value vs reference, nil pointers
Slices and arrays: make, append, capacity, sub-slices
Maps: creation, access, deletion, iteration, zero values
Interfaces: empty interface, type assertions, type switches
Standard library: net/http, encoding/json, io, context
HTTP servers: http.Handler, http.HandlerFunc, multiplexers
Context: cancellation, timeouts, values, propagation
Testing: unit tests, table-driven tests, mocking, coverage
GORM: models, migrations, associations, preloading, hooks
Frameworks: Gin (routing, middleware), Echo, Fiber
Concurrency patterns: worker pools, pipelines, fan-out/fan-in
Middleware: chaining, authentication, logging, recovery
Performance: profiling (pprof), benchmarks, optimizations
Modules: go.mod, versioning, dependencies, vendoring
Deployment: Docker multi-stage builds, Kubernetes, static binaries
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