LearnViz CompSci
Home / Learn / Concurrency & Parallelism / Software Transactional Memory

Intermediate Topic 29 of 51 Concurrency & Parallelism

Software Transactional Memory

Treating memory updates like database transactions.

How it works

STM wraps operations in atomic blocks; the runtime tracks reads and writes and retries on conflict, composing correctly unlike locks.

Where it is used

Haskell, Clojure.

Common pitfall

Overhead and side effects cannot be retried.

Where it fits in the course

Software Transactional Memory is topic 29 of 51 in Concurrency & Parallelism, rated Intermediate. It follows ABA Problem. The next topic is Data Parallelism.

Practice and explore

How to study this topic

  1. Read the explanation above and restate the definition in your own words.
  2. Open the interactive lesson and answer its mini quiz.
  3. Read the common pitfall, then write a short example that avoids it.
  4. Check your understanding in the Concurrency & Parallelism quiz, and revisit the topic if you miss a question.

Frequently asked questions

What is Software Transactional Memory?
Treating memory updates like database transactions. It belongs to Concurrency & Parallelism and is an intermediate-level topic.
Where do people use Software Transactional Memory?
Haskell, Clojure.
What is the most common mistake with Software Transactional Memory?
Overhead and side effects cannot be retried.
What should I learn before this topic?
Start with ABA Problem, the topic just before it in Concurrency & Parallelism.
How can I practice it?
Answer the mini quiz in the interactive lesson, then take the Concurrency & Parallelism quiz.
Is Software Transactional Memory hard to learn?
It is an Intermediate topic. Be comfortable with the Beginner topics in this area first, then read the common pitfall carefully, since it is where most mistakes happen.
How long does it take to learn Software Transactional Memory?
Most learners can read the explanation and finish the interactive lesson in under an hour. Fluency comes from applying the idea, so plan a few short practice sessions with the quiz.
Which topics are related to Software Transactional Memory?
ABA Problem, Data Parallelism, Wait-Free Algorithms are closely connected. The full list is in the related topics section of this page.
What should I study after Software Transactional Memory?
Continue with Data Parallelism, the next topic in Concurrency & Parallelism.

Related topics