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The parser cascade pattern: extracting recipes from messy food blogs

DEV Community·Forrest Miller·21 days ago
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Most recipe pages are not hard because the recipe is complicated. They are hard because the useful data is surrounded by everything else a publishing business needs: ads, modals, autoplay video, SEO prose, social widgets, tracking scripts, and sometimes bot protection. For RecipeStripper , the product goal is small: paste a public recipe URL and get a clean cooking view. The implementation is not one parser. It is a cascade. This is the pattern that has held up best in production: Fetch the page with the cheapest reliable method. Parse the highest-confidence structure first. Fall back only when the previous layer cannot return enough recipe data. Preserve failure reasons instead of pretending every site works. Stage 0: fetching is part of parsing Before a parser can run, the app has to get usable HTML. RecipeStripper's fetch chain starts with a normal server-side request using browser-like headers.…

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