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Deep dives into web data infrastructure, extraction techniques, and the future of structured data at scale.
155 articles
TL;DR: Choose Ruby HTML and XML parsers by workload, not by a generic ranking. Start with Nokogiri for broad HTML and XML tree parsing, consider Ox or LibXML Ruby for XML-specific jobs, and add Selenium only when a real browser must render or interact with the page.
TL;DR: Locate the failed hop before retrying a proxy request. Use status codes, CONNECT results, and safe diagnostic records to separate proxy failures from target responses.
TL;DR: First determine whether the table rows exist in the HTTP response, arrive through a data request, or require a browser to render. Then use the static Axios and Cheerio script or the focused Puppeteer path below to scrape HTML table in JavaScript, validate header-driven records, deduplicate pages, and write CSV safely. An HTML table organizes information into rows and columns, usually with <table>, <tr>, <th>, and <td> elements. To scrape HTML table in JavaScript means retrieving or rendering that markup, converting each data row into a JavaScript object, validating the result, and serializing it to a format such as CSV.
TL;DR: Jsoup is the default library for HTML parsing in Java. This guide walks the full lifecycle (Maven setup, loading a Document, CSS selectors, DOM traversal, extraction, modification, and serialization), plus a runnable scraping project, error handling, pagination, and the limits that push you toward a headless browser or scraping API.
TL;DR: To Python extract text from HTML, parse the markup with a real parser (BeautifulSoup, lxml.html, or html-text), strip scripts, styles, and site chrome, then normalize whitespace and Unicode before saving. This guide compares the main libraries, fixes the common cleanup traps, and ends with a runnable crawler that writes JSONL plus per-page .txt files.
TL;DR: This is an opinionated, end-to-end guide to web scraping with Scrapy in 2026. You will install Scrapy, prototype selectors in the shell, build a multi-page e-commerce spider, clean items with Item Loaders, persist to a database, harden settings against bans, and bolt on Scrapy-Playwright for JavaScript-rendered pages.
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