Advanced

Level: Advanced | 15 Labs | Docker: golang:1.22-alpine

Master production-grade Go engineering: memory model, profiling, reflection, generics, distributed patterns, gRPC, Redis, TLS, WebAssembly, and a full capstone microservice.

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Lab Index

#	Lab	Topics	Time
01	Memory Model & Escape Analysis	happens-before, stack vs heap, go build -gcflags="-m", sync/atomic, CAS, lock-free stack	45 min
02	Profiling with pprof	CPU/heap/goroutine profiles, net/http/pprof, go tool pprof, benchmark + cpuprofile	45 min
03	unsafe & reflect	reflect.TypeOf/ValueOf, struct tags, MethodByName, MakeFunc, unsafe.Pointer, zero-copy []byte↔string	45 min
04	sync.Pool & Allocators	sync.Pool, bytes.Buffer pooling, -benchmem, allocs/op, arena allocator concept	45 min
05	gRPC Service	proto3, protoc-gen-go, unary + streaming RPC, interceptors, metadata, status codes	45 min
06	Distributed Patterns	Circuit breaker (gobreaker), retry + jitter, token bucket (x/time/rate), bulkhead, health checks	45 min
07	Kafka with kafka-go	Writer/Reader, consumer groups, key-based routing, at-least-once, EOS concept	45 min
08	Redis with go-redis/v9	String/Hash/ZSet/Pipeline/TxPipeline/Pub-Sub/Streams, live Redis verified	45 min
09	Hexagonal Microservice	Ports & adapters, domain layer, slog, health/ready endpoints, graceful shutdown	45 min
10	Advanced Generics	Union constraints, ~T, Stack/Queue/Set/OrderedMap, Map/Filter/Reduce/GroupBy, cmp.Ordered	45 min
11	Go to WebAssembly	GOOS=js GOARCH=wasm, syscall/js DOM, JS↔Go calls, 2.1MB binary verified	45 min
12	Plugin System	-buildmode=plugin, plugin.Open/Lookup, interface contracts, hashicorp/go-plugin RPC	45 min
13	TLS & Cryptography	ECDSA keygen, self-signed certs, mTLS, AES-256-GCM, HMAC-SHA256, bcrypt	45 min
14	Performance Tuning	GOGC, GOMEMLIMIT, GOMAXPROCS, goroutine stacks, net.Buffers, TCP_NODELAY, -benchmem	45 min
15	Capstone: Distributed Service	SQLite (modernc), Redis cache, circuit breaker, slog, graceful shutdown, table tests	45 min

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Prerequisites

• Go 1.22+

• Docker (for isolated environments)

• Familiarity with Go goroutines, channels, and interfaces

Quick Start

# Pull the Go 1.22 Alpine image
docker pull golang:1.22-alpine

# Start a lab container
docker run -it --rm golang:1.22-alpine sh

# For labs requiring Redis (Lab 08, Lab 15)
docker run -d --name redis-lab -p 6379:6379 redis:7-alpine

# For Lab 15 capstone (with Redis)
docker run -it --rm --network=host golang:1.22-alpine sh

Learning Path

Labs 01-04  → Runtime internals (memory, profiling, reflection, pooling)
Labs 05-07  → Distributed infrastructure (gRPC, Kafka)
Labs 08-09  → Storage & architecture (Redis, hexagonal)
Lab  10     → Language features (generics)
Labs 11-12  → Platform targets (WASM, plugins)
Lab  13     → Security (TLS, crypto)
Lab  14     → Performance (tuning, benchmarking)
Lab  15     → Capstone (everything wired together)

Key Libraries Used

Library	Version	Purpose
github.com/sony/gobreaker	v0.5.0	Circuit breaker
golang.org/x/time/rate	v0.9.0	Token bucket rate limiter
github.com/redis/go-redis/v9	v9.x	Redis client
github.com/segmentio/kafka-go	v0.4.47	Kafka producer/consumer
google.golang.org/grpc	v1.62.0	gRPC framework
modernc.org/sqlite	v1.33.1	Pure Go SQLite (no CGO)
log/slog	stdlib Go 1.21	Structured logging

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Docker-verified with golang:1.22-alpine. All output captured from real runs.