Web Scraping30 min read
Scraping Architecture
Design a clean scraping system: separation of fetch, parse, and store layers for maintainable and scalable scrapers.
David Miller
December 21, 2025
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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 ```python 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 ```
```python html = fetch(url) data = parse(html) store(data) ```
Graph: architecture ```mermaid 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
#Python#Advanced#Architecture