Start by defining the two models and their core philosophies: CSP (communicating sequential processes) with channels vs. shared memory with locks. Then compare them across dimensions like safety, performance, and complexity, using concrete examples. Finally, discuss trade-offs and when to choose each, emphasizing that Go supports both and the choice depends on the problem.
Pro tip: Mention that Go's race detector and the principle 'don't communicate by sharing memory; share memory by communicating' are practical tools for enforcing safe concurrency, and that channels are not a silver bullet—sometimes a mutex is simpler and faster.
Explain CSP and shared-memory concurrency, highlighting that Go's channels are first-class and goroutines are lightweight threads.
Discuss buffered vs unbuffered channels, select for multiplexing, and how locks work with shared memory, including atomic operations.
Cover deadlocks, race conditions, and complexity in both models, and how Go's tooling helps detect them.
Compare performance, scalability, and code clarity, noting that channels add overhead but improve safety in certain patterns.
Give guidelines: use channels for orchestration and data flow, locks for protecting small critical sections or shared state.
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