[Solved] You want to optimize your Flask app's static files by compressing them and setting cache headers for better performance. Which code snippet correctly applies both optimizations? | Flask

Flask - Performance Optimization

You want to optimize your Flask app's static files by compressing them and setting cache headers for better performance. Which code snippet correctly applies both optimizations?

A

from flask import Flask, send_from_directory
from flask_compress import Compress

app = Flask(__name__)
Compress(app)

@app.route('/static/<path:filename>')
def static_files(filename):
    response = send_from_directory('static', filename)
    response.cache_control.max_age = 31536000  # 1 year
    return response

B

from flask import Flask

app = Flask(__name__)

@app.route('/static/<filename>')
def static_files(filename):
    return open(f'static/{filename}').read()

C

from flask import Flask
from flask_compress import Compress

app = Flask(__name__)

@app.route('/static/<filename>')
def static_files(filename):
    return open(f'static/{filename}').read()

D

from flask import Flask, send_static_file

app = Flask(__name__)

@app.route('/static/<filename>')
def static_files(filename):
    return send_static_file(filename)

Step-by-Step Solution

Solution:

Step 1: Enable compression with flask_compress
from flask import Flask, send_from_directory from flask_compress import Compress app = Flask(__name__) Compress(app) @app.route('/static/') def static_files(filename): response = send_from_directory('static', filename) response.cache_control.max_age = 31536000 # 1 year return response correctly imports and calls Compress(app) to enable compression.
Step 2: Set cache headers on static file response
from flask import Flask, send_from_directory from flask_compress import Compress app = Flask(__name__) Compress(app) @app.route('/static/') def static_files(filename): response = send_from_directory('static', filename) response.cache_control.max_age = 31536000 # 1 year return response sets cache_control.max_age to 1 year, which helps browsers cache files efficiently.
Step 3: Verify other options
Options B, C, and D do not enable compression or set cache headers properly, and B and C read files unsafely without response objects.
Final Answer:
Option A code snippet correctly compresses and caches static files -> Option A
Quick Check:
Compression + cache headers = from flask import Flask, send_from_directory from flask_compress import Compress app = Flask(__name__) Compress(app) @app.route('/static/') def static_files(filename): response = send_from_directory('static', filename) response.cache_control.max_age = 31536000 # 1 year return response [OK]

Quick Trick: Use flask_compress and set cache_control.max_age [OK]

Common Mistakes:

MISTAKES

Not calling Compress(app)
Serving files without response objects
Not setting cache headers for static files

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More Flask Quizzes

You want to optimize your Flask app's static files by compressing them and setting cache headers for better performance. Which code snippet correctly applies both optimizations?

Step 1: Enable compression with flask_compress

Step 2: Set cache headers on static file response

Step 3: Verify other options

Final Answer:

Quick Check:

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