BV BitVistara

Golang Roadmap

A practical path to learn Go from zero to production-ready.

  1. 1) Foundations

    • Setup toolchain: Go, `go env`, modules (`go mod init`, `go get`).
    • Syntax: variables, types, constants, control flow, functions.
    • Slices, maps, structs, methods, interfaces, generics (type parameters).
    • Error handling patterns; `errors.Is`, `fmt.Errorf` with wrapping.

  2. 2) Concurrency

    • Goroutines and the scheduler.
    • Channels: buffered/unbuffered, select, cancellation.
    • Context: timeouts, deadlines, cancellation propagation.
    • Sync: WaitGroup, Mutex/RWMutex, Atomic.

  3. 3) Building APIs

    • net/http basics, handlers, middleware, routing (e.g., Gorilla Mux).
    • JSON encoding/decoding, validation.
    • Persistence: database/sql, pgx, GORM; migrations.
    • Config and secrets: env vars, flags, files.

  4. 4) Testing & Quality

    • Testing: `testing` package, table tests, httptest, golden files.
    • Benchmarks and profiling (pprof), race detector, coverage.
    • Linting and formatting: `go fmt`, `go vet`, staticcheck.

  5. 5) Production

    • Observability: structured logging, metrics (Prometheus), tracing (OTel).
    • Builds and releases: `go build`, multi-arch, Docker images.
    • Secure by default: input validation, timeouts, least privilege.
    • Performance: memory patterns, pooling, choosing the right data structure.

Tip: read and contribute to Go's standard library and popular OSS to learn real-world patterns.

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