Go

From parsing and type checking through SSA/optimization, code generation, linking, modules, and build cache.

Stacks, heap, allocation, escape analysis, garbage collection, and observable memory metrics.

Reading Go assembler syntax, ABI-sensitive registers, stack frames, and generated machine code.

Alignment, padding, struct layout, cache effects, and portable reasoning about field order.

Go's concurrent tracing garbage collector, mark/sweep phases, write barriers, GC pacing, GOGC, memory limits, observability, and tuning priorities.

Small growable goroutine stacks, stack growth, copying, and escape-driven heap allocation.

Go runtime heap allocation, size classes, spans, per-P caches, sweeping, and GC interaction.

Testing package conventions, table-driven tests, subtests, race checks, fuzzing, and maintainable boundaries.

Profiling Go programs with CPU, heap, allocation, goroutine, mutex, and block profiles, plus a measurement-first workflow for finding performance bottlenecks.

Writing repeatable Go benchmarks and interpreting time, allocations, variance, and compiler effects.