design_patterns-wait_group

Use a wait group pattern that collects all errors via GroupBuilder and returns them through a single GetError call. This lets you coordinate concurrent Go tasks and retrieve one aggregated error instead of checking each goroutine individually.

Register cleanup logic with DoAfter after your concurrent Do tasks. DoAfter executes in a structured, ordered sequence once parallel work completes, ensuring cleanup happens in a predictable order even when preceding tasks ran concurrently.

Yes, the pattern exposes MakeWaitGroupParallel and MakeWaitGroupSerial constructors. Both support Do, DoAfter, and GetError, so you can switch between concurrent and sequential execution modes while keeping the same error aggregation and cleanup workflow.

Enable optional stack-frame capture when creating your wait group. This records debug stack traces alongside aggregated errors, helping you pinpoint which concurrent task produced a given error during parallel execution.

Choose serial execution with MakeWaitGroupSerial when tasks depend on each other's completion or must run in strict sequence. Use MakeWaitGroupParallel for independent tasks that benefit from concurrent execution, while both modes retain the same error aggregation and cleanup.