We're a small team and only need a few thousand pages per week for an ML dataset. Writing the scraper itself isn't difficult, but handling proxies, retries, JavaScript-rendered pages, and ongoing site changes could become a maintenance burden. For this level of volume, would you build the system in Node.js or pay for a managed web scraping API and focus on the dataset instead?
3 Answers
It depends on the targets. Some sites may only need a simple HTTP client and parser, so you might not need proxy rotation or JavaScript rendering at all. Test a few representative sites first and compare the managed service cost with the features you actually require.
Building in-house can make sense when the source sites are stable, the scraping volume is consistently high, or you need complete control over the pipeline. For a small, time-sensitive project, though, a ready-made service is likely the more practical choice. The main tradeoff is whether the subscription cost is lower than the engineering and maintenance time.
For a few thousand pages a week, I’d probably use a managed scraping API. The expensive part usually isn’t writing the initial scraper—it’s maintaining proxies, retries, browser rendering, and selectors whenever sites change. Paying for that infrastructure lets your team spend its time on the ML work.
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