--- title: "Saloni Jain (@salonij) | Hashnode" description: "eCommerce enthusiast sharing insights on online selling, free marketplaces, and smart shopping trends. Read the latest articles by Saloni Jain on Hashnode." url: "https://hashnode.com/@salonij" --- @salonij # Saloni Jain @salonij · New York, USA · Joined June 2026 eCommerce enthusiast sharing insights on online selling, free marketplaces, and smart shopping trends. ### [Mapping eBay Listings to Another Marketplace: Categories, Item Specifics and Condition Codes](https://salonij.hashnode.dev/mapping-ebay-listings-to-another-marketplace?utm_source=hashnode&utm_medium=feed) What breaks when you import listings from eBay, and the patterns that keep categories, item specifics and condition accurate. 8 min read · [salonij.hashnode.dev](https://salonij.hashnode.dev/mapping-ebay-listings-to-another-marketplace?utm_source=hashnode&utm_medium=feed) [Oct 26](https://hashnode.com/posts/mapping-ebay-listings-to-another-marketplace/6adf6f1533231dfd04793bc9) ### [Caching a Multi-Category Marketplace With Varnish: What to Cache, and What Never to Cache](https://salonij.hashnode.dev/varnish-caching-marketplace-what-to-cache?utm_source=hashnode&utm_medium=feed) A practical guide to putting Varnish in front of a marketplace with category pages, search, listings and logged-in sellers. 8 min read · [salonij.hashnode.dev](https://salonij.hashnode.dev/varnish-caching-marketplace-what-to-cache?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/varnish-caching-marketplace-what-to-cache/6ace327c2a282732180272b6) [Oct 13](https://hashnode.com/posts/varnish-caching-marketplace-what-to-cache/6ace327c2a282732180272b6) ### [I Built a Tiny Fee Calculator With Vanilla JS (No Framework, No Build Step)](https://salonij.hashnode.dev/i-built-a-tiny-fee-calculator-with-vanilla-js-no-framework-no-build-step?utm_source=hashnode&utm_medium=feed) A weekend project in a single HTML file — no npm install, no framework, just a slider and some math. 3 min read · [salonij.hashnode.dev](https://salonij.hashnode.dev/i-built-a-tiny-fee-calculator-with-vanilla-js-no-framework-no-build-step?utm_source=hashnode&utm_medium=feed) [Sep 7](https://hashnode.com/posts/i-built-a-tiny-fee-calculator-with-vanilla-js-no-framework-no-build-step/6a9eadf9f6f1ccba26cf11d6)