Scraping Architecture

As scrapers grow, one-file scripts become messy.

Good scrapers are designed like systems.

Three main layers

1. Fetch → get pages
2. Parse → extract data
3. Store → save results

Why separate layers

• easier debugging
• reusable code
• easy changes when site updates

Example structure

def fetch(url):
    return requests.get(url, headers=headers).text

def parse(html):
    soup = BeautifulSoup(html, "html.parser")
    return soup.select_one(".title").text

def store(data):
    print(data)  # or save to file/db

html = fetch(url)
data = parse(html)
store(data)

Graph: architecture

flowchart LR
  A[Fetch] --> B[Parse]
  B --> C[Store]

Real projects add

• retries
• logging
• error handling
• queues

Remember

• Design early, save pain later
• Clean layers make scrapers robust