Concurrency & Channels Training

Master Go's powerful concurrency model with this comprehensive 3-day training. Learn how goroutines, channels, and sync primitives work together to build concurrent programs that are correct, efficient, and easy to reason about.

Training Details

Duration	3 days (24 hours)
Level	Intermediate
Delivery	In-person, Live online, Hybrid
Certification	N/A

Who Is This For?

• Go developers ready to write concurrent code
• Backend engineers building high-throughput systems
• Systems programmers working with parallel processing
• Developers debugging concurrency issues in Go applications
• Team leads designing concurrent architectures

Learning Outcomes

After completing this training, participants will be able to:

• Design concurrent programs using goroutines and channels
• Apply the select statement for multiplexing channel operations
• Use sync primitives (Mutex, RWMutex, WaitGroup, Once, Pool)
• Implement common concurrency patterns (fan-in, fan-out, pipeline, worker pool)
• Use context for cancellation, timeouts, and request-scoped values
• Detect and fix race conditions using the Go race detector

Detailed Agenda

Day 1: Goroutines and Channels

Module 1: Goroutines

• The Go scheduler and the GMP model
• Launching and managing goroutines
• Stack growth and goroutine lifecycle
• Hands-on: Build a parallel file scanner

Module 2: Channels Fundamentals

• Unbuffered and buffered channels
• Channel direction (send-only, receive-only)
• Closing channels and range over channels
• Hands-on: Implement producer-consumer with channels

Module 3: Select Statement

• Multiplexing with select
• Timeouts and non-blocking operations
• Done channels and signaling
• Hands-on: Build a concurrent HTTP poller

Day 2: Synchronization and Patterns

Module 4: Sync Primitives

• sync.Mutex and sync.RWMutex
• sync.WaitGroup for coordination
• sync.Once for initialization
• sync.Pool for object reuse
• Hands-on: Build a thread-safe cache

Module 5: Concurrency Patterns

• Fan-in and fan-out patterns
• Pipeline pattern for data processing
• Worker pool pattern
• Semaphore pattern with buffered channels
• Hands-on: Build a concurrent image processing pipeline

Module 6: Race Conditions and Debugging

• Understanding data races
• The Go race detector (-race flag)
• Atomic operations with sync/atomic
• Common concurrency bugs and fixes
• Hands-on: Find and fix race conditions in existing code

Day 3: Context, Advanced Patterns, and Real-World Applications

Module 7: Context Package

• context.Background and context.TODO
• context.WithCancel, WithTimeout, WithDeadline
• context.WithValue and request-scoped data
• Propagating context through call chains
• Hands-on: Add cancellation and timeouts to an HTTP server

Module 8: Advanced Concurrency Patterns

• Error groups (golang.org/x/sync/errgroup)
• Rate limiting with time.Ticker
• Graceful shutdown patterns
• Bounded parallelism
• Hands-on: Build a rate-limited web crawler

Module 9: Real-World Concurrency

• Designing concurrent APIs
• Testing concurrent code
• Performance considerations and benchmarking
• When NOT to use concurrency
• Hands-on: Capstone — build a concurrent task scheduler

Prerequisites

• Go Fundamentals or equivalent experience
• Understanding of Go types, interfaces, and error handling
• Comfort with Go toolchain (go build, go test, go mod)

Delivery Formats

Format	Description
In-Person	On-site at your company's location, hands-on with direct interaction
Live Online	Interactive virtual sessions with screen sharing and real-time labs
Hybrid	Combination of on-site and remote sessions, flexible scheduling

All formats include hands-on labs, course materials, concurrency pattern references, and post-training support.