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Deep dives into web data infrastructure, extraction techniques, and the future of structured data at scale.
155 articles
TL;DR: Web Scraping With AWS Lambda works best when each invocation is short, bounded, and independently retryable. Start with direct HTTP, AWS SAM, and S3, then add SQS, containers, browser rendering, proxies, or a managed fetch layer only when the workload proves it needs them.
TL;DR: GoSpider is a command-line crawler for discovering URLs, not a complete structured-data scraper. This How To Use GoSpider guide shows a bounded crawl, clean output handling, a Colly-to-CSV handoff, and a diagnostic path for 403 responses or pages that require JavaScript rendering.
TL;DR: Redfin exposes hidden API endpoints that return structured JSON for property listings, making it possible to skip fragile HTML parsing entirely. This guide walks you through building a Python scraper that extracts rental and sale data, searches by location, monitors new listings via XML sitemaps, and exports clean results to CSV or JSON.
TL;DR: To parse JSON in Python, use the built-in json module: json.loads() for a string or bytes, json.load() for a file, and Requests' response.json() for an HTTP response. Check the HTTP status and JSON validity separately, because a 200 response can still be HTML. This guide also covers decode errors, nested access, validation, large files, and JSON hidden inside web pages.
TL;DR: Nodriver is an async Python library that drives Chromium over the Chrome DevTools Protocol, with no Selenium or chromedriver binary. Use it when a self-hosted stealth browser closer to a real Chrome session beats a WebDriver stack, but know it doesn't remove IP, TLS, or behavioral risk on its own. This tutorial goes from a first script to containerized production and a hosted Browser API.
TL;DR: Google /goto URLs with a CAES token, and older /url wrappers, are redirect layers, not destinations, so a SERP scraper that treats every href as final breaks rank tracking and link stores. Prefer a structured SERP API when it returns destination links. When you must parse HTML, classify every href, dedupe redirects, and resolve them with a plain GET. Do not decrypt CAES.
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