Concurrency vs Parallelism vs Asynchronous I/O

Venn Diagrams · made in Skemio

Venn diagram illustrating Concurrency, Parallelism, and Asynchronous I/O with overlapping areas like event loops and multi-core thread pools.

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What it shows

Concurrency structures independent tasks via time-slicing on single cores.
Parallelism physically executes multiple computations across distinct cores.
Async I/O frees threads to process other tasks while waiting on network/disk.

The takeaway

Concurrency is about program structure; parallelism and async are execution strategies.

#Concurrency','#Parallelism','#AsyncIO','#Backend','#ComputerScience','#SystemArchitecture

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