Cache backends (memory, Redis, Memcached) in Django - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

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

Django

CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.[1].Cache',
        'LOCATION': 'unique-snowflake',
    }
}

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

Amemcached

Bredis

Clocmem

Dfilebased

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'redis' or 'memcached' instead of 'locmem' for in-memory cache.

Confusing 'filebased' with in-memory cache.

The in-memory cache backend in Django is called locmem. It stores cache data in local memory.

2fill in blank

medium

Complete the code to configure Redis cache backend in Django settings.

Django

CACHES = {
    'default': {
        'BACKEND': 'django_redis.cache.[1]Cache',
        'LOCATION': 'redis://127.0.0.1:6379/1',
    }
}

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Afilebased

Blocmem

Cmemcached

DRedis

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'locmem' or 'memcached' instead of 'Redis' for Redis cache.

Incorrect Redis URL format.

To use Redis as cache backend (requires django-redis package), Django uses the Redis backend path.

3fill in blank

hard

Fix the error in the Memcached cache backend configuration.

Django

CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.[1].Cache',
        'LOCATION': '127.0.0.1:11211',
    }
}

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

Aredis

Bmemcached

Clocmem

Dfilebased

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'redis' or 'locmem' instead of 'memcached' for Memcached cache.

Wrong port or location format.

The Memcached backend in Django is specified as memcached. This fixes the backend path error.

4fill in blank

hard

Fill both blanks to create a Redis cache backend with a custom timeout.

Django

CACHES = {
    'default': {
        'BACKEND': 'django_redis.cache.[1]Cache',
        'LOCATION': 'redis://127.0.0.1:6379/0',
        'TIMEOUT': [2],
    }
}

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

ARedis

B300

C600

Dmemcached

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong backend for Redis cache.

Setting timeout as string instead of integer.

Use Redis as backend (requires django-redis) and set TIMEOUT to 300 seconds for cache expiration.

5fill in blank

hard

Fill all three blanks to configure Memcached cache with a custom key prefix and timeout.

Django

CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.[1].Cache',
        'LOCATION': '127.0.0.1:11211',
        'KEY_PREFIX': '[2]',
        'TIMEOUT': [3],
    }
}

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Aredis

Bmemcached

Cmyapp

D600

Attempts:

3 left

💡 Hint

Common Mistakes

Using Redis backend for Memcached cache.

Not setting a key prefix or timeout properly.

Memcached backend is memcached. The key prefix helps separate cache keys, here set to myapp. Timeout is set to 600 seconds.