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Web Scraping & Bots · 课时

云存储方案

探索使用 AWS S3 或 Google Cloud Storage 等云存储服务存储大型数据集的方案。

云存储方案 是 CoddyKit 上的免费 Web Scraping & Bots 课时。 这是第 3 节课，共 4 节。 你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。 这是 Web Scraping & Bots 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Web Scraping & Bots 课程共包含 4 节课。

本课时的部分内容尚未翻译，以英文显示。

Welcome to Cloud Storage

When scraping large amounts of data, storing it reliably and accessibly is crucial. Cloud storage solutions offer a powerful way to handle this.

They provide scalable, durable, and highly available storage, perfect for your growing datasets.

Cloud for Your Scraped Data

Traditional local storage can quickly become a bottleneck. Cloud storage offers several key advantages for scraped data:

  • Scalability: Grow storage instantly as your data expands.
  • Durability: Data is replicated across multiple locations, reducing loss risk.
  • Accessibility: Access your data from anywhere, anytime, with internet.
  • Cost-Effectiveness: Pay only for what you use, often cheaper for large volumes.

Meet AWS S3

Amazon Web Services (AWS) S3, or Simple Storage Service, is one of the most popular cloud storage options. It's designed for high durability, availability, and scalability.

S3 stores data as "objects" within "buckets." Think of buckets as top-level folders, and objects as files within those folders.

S3 Buckets and Objects

Before storing anything, you need an S3 bucket. A bucket name must be globally unique across all of AWS.

Inside a bucket, you store objects. Each object has a unique key (its name) and can be any type of file: text, images, JSON, CSV, etc.

Python & AWS S3

To interact with AWS S3 using Python, we use the boto3 library. First, ensure you have it installed (pip install boto3) and AWS credentials configured.

Here's how to upload a simple text string as an object:

import boto3

# Replace with your bucket name and region
# Ensure AWS credentials are configured (e.g., via AWS CLI or environment vars)
BUCKET_NAME = 'your-unique-coddykit-bucket'
REGION_NAME = 'us-east-1' # Example region

def upload_to_s3(bucket_name, object_key, data):
    s3 = boto3.client('s3', region_name=REGION_NAME)
    try:
        s3.put_object(Bucket=bucket_name, Key=object_key, Body=data)
        print(f"'{object_key}' uploaded successfully to '{bucket_name}'")
    except Exception as e:
        print(f"Error uploading to S3: {e}")

if __name__ == "__main__":
    my_data = "This is some scraped data content."
    my_object_key = "scraped_data/lesson_output.txt"
    # IMPORTANT: Create your S3 bucket manually first or add bucket creation logic
    # For a runnable example, ensure the bucket exists.
    print("Attempting to upload data to S3...")
    upload_to_s3(BUCKET_NAME, my_object_key, my_data)

Google Cloud Storage (GCS)

Google Cloud Storage (GCS) is Google's equivalent to AWS S3, offering similar object storage capabilities. It's known for its strong integration with other Google Cloud services.

Like S3, GCS also organizes data into "buckets" and "objects" (often called "blobs").

Python & GCS

For Google Cloud Storage, we use the google-cloud-storage library. Install it with pip install google-cloud-storage.

You'll also need to set up authentication, usually via a service account key file or by running in a Google Cloud environment.

Here's how to upload a simple text string:

from google.cloud import storage
import os

# Replace with your bucket name
# Ensure GOOGLE_APPLICATION_CREDENTIALS environment variable is set
# pointing to your service account key file.
BUCKET_NAME = 'your-unique-coddykit-gcs-bucket'

def upload_to_gcs(bucket_name, blob_name, data):
    """Uploads a string to the bucket."""
    # Instantiates a client
    storage_client = storage.Client()
    bucket = storage_client.bucket(bucket_name)
    blob = bucket.blob(blob_name)

    try:
        blob.upload_from_string(data)
        print(f"'{blob_name}' uploaded successfully to '{bucket_name}'")
    except Exception as e:
        print(f"Error uploading to GCS: {e}")

if __name__ == "__main__":
    # Ensure you have authenticated, e.g., by setting
    # os.environ["GOOGLE_APPLICATION_CREDENTIALS"] = "/path/to/your/key.json"
    # For a runnable example, this must be configured.
    my_data = "This is some more scraped data content for GCS."
    my_blob_name = "scraped_data/lesson_gcs_output.txt"
    print("Attempting to upload data to GCS...")
    upload_to_gcs(BUCKET_NAME, my_blob_name, my_data)

S3 vs. GCS: Which to Choose?

Both AWS S3 and Google Cloud Storage are excellent choices. Your decision often depends on:

  • Existing Ecosystem: If you already use AWS or Google Cloud for other services, sticking with the same provider simplifies integration.
  • Pricing Models: While similar, there can be nuances in pricing for storage, data transfer, and operations.
  • Specific Features: Each offers unique features like lifecycle policies, different storage classes, and data analytics integrations.

Keep Your Data Secure

Storing data in the cloud requires careful attention to security. Both S3 and GCS provide robust mechanisms:

  • Identity and Access Management (IAM): Control who can access your buckets and objects.
  • Encryption: Data is typically encrypted at rest and in transit.
  • Bucket Policies/Permissions: Define granular rules for access.

Always follow best practices to protect your scraped data.

Cloud Storage Check

Let's test your understanding of cloud storage for scraped data.

Cloud Storage Recap

You've learned about the power of cloud storage for persisting your scraped data!

  • We explored AWS S3 and Google Cloud Storage as leading solutions.
  • You saw how Python libraries (boto3 for S3, google-cloud-storage for GCS) enable easy interaction.
  • We discussed key benefits like scalability, durability, and accessibility, and touched upon security considerations.

Using cloud storage is essential for managing large, critical datasets from your web scraping projects.

常见问题解答

「云存储方案」课时是免费的吗？

是的 — 「云存储方案」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Web Scraping & Bots 课程的其余内容，请升级到 CoddyKit PRO。 Web Scraping & Bots 课程共包含 4 节课。

「云存储方案」这节课中我会学到什么？

探索使用 AWS S3 或 Google Cloud Storage 等云存储服务存储大型数据集的方案。 你通过在浏览器中直接运行的动手代码来练习 Web Scraping & Bots，全天候 AI 导师会在你学习这节课的过程中回答你的问题。

学习 Web Scraping & Bots 需要有经验吗？

无需任何先前经验。CoddyKit 上的 Web Scraping & Bots 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。 这是第 3 节课，共 4 节。

「云存储方案」课时需要多长时间？

大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。

我能在这节 Web Scraping & Bots 课中编写并运行代码吗？

能。每节 Web Scraping & Bots 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。

此课程中的所有课时

  1. 将数据存储为 CSV/JSON
  2. 与数据库集成（SQL）
  3. 云存储方案
  4. 将数据存储在 NoSQL 数据库中
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