Rate limiting in FastAPI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the rate limiting dependency from fastapi-limiter.

FastAPI

from fastapi_limiter import [1]

Drag options to blanks, or click blank then click option'

ARateLimiter

BLimiterDependency

CLimiter

DRateLimit

Attempts:

3 left

💡 Hint

Common Mistakes

Importing a non-existent class like 'Limiter' or 'RateLimit'.

Confusing the import with other unrelated classes.

The RateLimiter is the correct class to import for rate limiting in FastAPI using fastapi-limiter.

2fill in blank

medium

Complete the code to apply a rate limit of 5 requests per minute to the endpoint.

FastAPI

@app.get("/items", dependencies=[Depends([1]("5/minute"))])
def read_items():
    return {"message": "Hello"}

Drag options to blanks, or click blank then click option'

ALimiterDependency

BLimiter

CRateLimiter

DDepends

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Depends' directly instead of wrapping the rate limiter.

Using incorrect class names like 'Limiter'.

The RateLimiter dependency is used to enforce the rate limit on the endpoint.

3fill in blank

hard

Fix the error in the initialization of the Redis backend for rate limiting.

FastAPI

import aioredis

redis = aioredis.from_url([1])

@app.on_event("startup")
async def startup():
    await FastAPILimiter.init(redis)

Drag options to blanks, or click blank then click option'

A"redis://localhost:6379"

B"http://localhost:6379"

C"localhost:6379"

D"redis://127.0.0.1"

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'http://' instead of 'redis://'.

Omitting the port number.

Using just the hostname without protocol.

The Redis URL must start with redis:// and include the port number for proper connection.

4fill in blank

hard

Fill both blanks to create a rate limit that allows 10 requests per minute and 100 requests per hour.

FastAPI

@app.get("/data", dependencies=[Depends(RateLimiter([1])), Depends(RateLimiter([2]))])
async def get_data():
    return {"data": "sample"}

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A"10/minute"

B"100/hour"

C"10/hour"

D"100/minute"

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up 'minute' and 'hour' in the strings.

Using incorrect numbers or units.

The first rate limiter allows 10 requests per minute, and the second allows 100 requests per hour, combining limits.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps each user to their request count if it is greater than 10.

FastAPI

user_counts = {user: count for user, count in counts.items() if count [1] [2] and user.is_active == [3]

Drag options to blanks, or click blank then click option'

A>

B10

CTrue

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' for count comparison.

Checking user.is_active against a string instead of boolean.

This comprehension filters users with counts greater than 10 and only active users.