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Advanced Topic 45 of 51 Distributed Systems & Cloud

Rate Limiting

Capping request rates to protect services.

How it works

Limiters cap requests per client using token bucket, leaky bucket or sliding window algorithms, returning HTTP 429 and Retry-After; distributed limits use Redis.

Where it is used

Protecting APIs from abuse.

Common pitfall

Per-node limits are inaccurate behind many instances.

Where it fits in the course

Rate Limiting is topic 45 of 51 in Distributed Systems & Cloud, rated Advanced. It follows Auto Scaling. The next topic is Circuit Breaker Pattern.

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 Distributed Systems & Cloud quiz, and revisit the topic if you miss a question.

Frequently asked questions

What is Rate Limiting?
Capping request rates to protect services. It belongs to Distributed Systems & Cloud and is an advanced-level topic.
Where do people use Rate Limiting?
Protecting APIs from abuse.
What is the most common mistake with Rate Limiting?
Per-node limits are inaccurate behind many instances.
What should I learn before this topic?
Start with Auto Scaling, the topic just before it in Distributed Systems & Cloud.
How can I practice it?
Answer the mini quiz in the interactive lesson, then take the Distributed Systems & Cloud quiz.
Is Rate Limiting hard to learn?
It is an Advanced topic. Expect to read the explanation more than once and to connect it with earlier topics. Working through a small example by hand helps most.
How long does it take to learn Rate Limiting?
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 Rate Limiting?
Auto Scaling, Circuit Breaker Pattern, Infrastructure as Code are closely connected. The full list is in the related topics section of this page.
What should I study after Rate Limiting?
Continue with Circuit Breaker Pattern, the next topic in Distributed Systems & Cloud.

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