Parallelism returns the current parallelism.

Parallelize runs the jobs in parallel.

ParallelizeWithCancelOnFailure returns a new ParallelizeOption that will attempt to cancel all other jobs via context cancellation if any job fails.

ParallelizeWithMultiplier returns a new ParallelizeOption that will use a multiple of Parallelism() for the number of jobs that can be run at once.

SetParallelism sets the parallelism.

ParallelizeOption is an option to Parallelize.