--- title: Improving the Efficiency of Rendering User Holdings description: Groww's engineering team tackled a high-traffic problem where the Holdings page received up to 1M requests per minute at market open. Analysis revealed 90% of... canonical: https://daily.dev/posts/improving-the-efficiency-of-rendering-user-holdings-enouf6yqx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Improving the Efficiency of Rendering User Holdings | daily.dev og:description: Groww's engineering team tackled a high-traffic problem where the Holdings page received up to 1M requests per minute at market open. Analysis revealed 90% of... og:url: https://daily.dev/posts/improving-the-efficiency-of-rendering-user-holdings-enouf6yqx og:image: https://api.daily.dev/og/posts/enOuF6yQx.png og:image:alt: Improving the Efficiency of Rendering User Holdings og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Improving the Efficiency of Rendering User Holdings **[Groww Engineering](https://daily.dev/sources/growwengg)** · 6 min read · 17 upvotes · 0 comments ## Summary Groww's engineering team tackled a high-traffic problem where the Holdings page received up to 1M requests per minute at market open. Analysis revealed 90% of users didn't trade on a given day, yet every request triggered full data fetches from Portfolio and Positions services. The solution shifted from optimizing retrieval speed to avoiding unnecessary retrieval entirely. A dedicated Holdings Service was built using CQRS, ingesting data via CDC pipelines. HTTP ETags stored in Redis enabled lightweight cache validation before any expensive downstream calls — returning 304 Not Modified when holdings hadn't changed. The result: 66% of requests never reached the retrieval path, downstream services were scaled down, and infrastructure costs dropped significantly. The service was built on CockroachDB to support future cell-based architecture. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Holding Revamp Went Live. Then Reality Check Hit Hard](https://daily.dev/posts/holding-revamp-went-live-then-reality-check-hit-hard-r7osghtg4) · Groww Engineering · 19 upvotes · 2 comments - [Redesign Authorization to monday.com Scale](https://daily.dev/posts/redesign-authorization-to-monday-com-scale-vahbvgdsl) · monday Engineering · 4 upvotes · 0 comments --- Tags: [#distributed-systems](https://daily.dev/tags/distributed-systems), [#redis](https://daily.dev/tags/redis) [View this post on daily.dev](https://daily.dev/posts/improving-the-efficiency-of-rendering-user-holdings-enouf6yqx) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Improving the Efficiency of Rendering User Holdings","url":"https://daily.dev/posts/improving-the-efficiency-of-rendering-user-holdings-enouf6yqx","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/improving-the-efficiency-of-rendering-user-holdings-enouf6yqx"},"datePublished":"2026-07-17T23:29:33.869Z","dateModified":"2026-07-18T06:21:05.844Z","description":"Groww's engineering team tackled a high-traffic problem where the Holdings page received up to 1M requests per minute at market open. 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