Caching strategies in FastAPI - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the FastAPI cache dependency.

FastAPI

from fastapi import FastAPI
from fastapi_cache import [1]

app = FastAPI()

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

ACacheManager

BCacheControl

CCache

DFastAPICache

Attempts:

3 left

💡 Hint

Common Mistakes

Using a wrong class name like Cache or CacheControl.

Trying to import from fastapi instead of fastapi_cache.

The correct import for FastAPI caching is FastAPICache from fastapi_cache.

2fill in blank

medium

Complete the code to set up an in-memory cache backend.

FastAPI

from fastapi_cache.backends.inmemory import [1]

cache_backend = [1]()

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

AInMemoryBackend

BMemoryCache

CInMemoryCache

DMemoryBackend

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'MemoryCache' or 'InMemoryCache' which do not exist.

Confusing backend with cache class names.

The in-memory backend class is called InMemoryBackend.

3fill in blank

hard

Fix the error in the cache decorator to set expiration time to 60 seconds.

FastAPI

@app.get('/items')
@cache(expire=[1])
async def get_items():
    return ['apple', 'banana']

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

A'60'

B6000

C60

D'sixty'

Attempts:

3 left

💡 Hint

Common Mistakes

Passing the number as a string like '60'.

Using a wrong number like 6000 or a word.

The expire parameter expects an integer number of seconds, so 60 without quotes is correct.

4fill in blank

hard

Fill both blanks to initialize the cache with the backend and FastAPI app.

FastAPI

from fastapi_cache import FastAPICache

FastAPICache.[1](cache_backend, prefix=[2])

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

Ainit

Bstart

C"fastapi-cache"

D"cache"

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'start' instead of 'init'.

Using a prefix with quotes missing or wrong string.

Use init to initialize the cache and set a prefix string like "cache".

5fill in blank

hard

Fill all three blanks to create a cached endpoint with a 120-second expiration.

FastAPI

@app.get('/data')
@FastAPICache.[1](expire=[2])
async def get_data():
    return [3]

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

Acache

B120

C['data1', 'data2']

Dcached

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong decorator name like 'cached'.

Passing expiration as string instead of number.

Returning a wrong data type.

The decorator is cache, expiration is 120 seconds, and the function returns a list of data.