--- title: Load Data Faster and Lower Your Costs with Firestore... description: Firestore now supports data bundles in its client SDKs, letting developers serialize documents or query results, host them on a CDN or object storage, and load... canonical: https://daily.dev/posts/load-data-faster-and-lower-your-costs-with-firestore-data-bundles--b9ca3iktt twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Load Data Faster and Lower Your Costs with Firestore Data Bundles! | daily.dev og:description: Firestore now supports data bundles in its client SDKs, letting developers serialize documents or query results, host them on a CDN or object storage, and load... og:url: https://daily.dev/posts/load-data-faster-and-lower-your-costs-with-firestore-data-bundles--b9ca3iktt og:image: https://api.daily.dev/og/posts/B9CA3iKtt.png og:image:alt: Load Data Faster and Lower Your Costs with Firestore Data Bundles! 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. # Load Data Faster and Lower Your Costs with Firestore Data Bundles! **[Firebase](https://daily.dev/sources/firebase-blog)** · 7 min read · 0 upvotes · 0 comments ## Summary Firestore now supports data bundles in its client SDKs, letting developers serialize documents or query results, host them on a CDN or object storage, and load them into client apps to be merged with the local cache. This reduces Firestore reads and can lower costs and improve load times for data that's read by most users, such as startup config, top news stories, or offline starter data. The post explains named queries, cache-only reads to avoid extra costs, and warns against overloading the cache since bundles load in full rather than incrementally and Firestore's cache isn't optimized for large datasets. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What are Firestore data bundles and how do they reduce costs? Firestore data bundles are serialized groups of documents, either individual documents or results of a query, that can be stored on a CDN or object storage service and loaded into client applications where they merge with the local cache. By reading from a cached bundle instead of querying Firestore directly, applications with large user bases can avoid extra database calls, cutting costs and improving load speed. _Developers optimizing Firestore costs at scale can find implementation patterns like this one on daily.dev._ ### When should I avoid using Firestore data bundles? Avoid data bundles for queries where users expect different, personalized results, or for any data containing private information, since bundles are generated server-side and can bypass Firestore security rules. Bundles work best when most users read the same small set of documents that don't change frequently, such as startup configuration or top news stories; stuffing an entire database into a bundle overloads the cache and slows the app. _Teams weighing caching strategies for Firestore apps can track these tradeoffs on daily.dev._ ### How do I query cached Firestore data without incurring extra costs after loading a bundle? Force the client to read only from the cache by adding an option such as {source: 'cache'} to a document request or query, which directs Firestore to use cached data even when the network is available. Named queries generated alongside a bundle ensure the client query exactly matches the one used to build the bundle, avoiding mismatches that would trigger a live database call. _Developers fine-tuning Firestore read costs can follow practical tips like this on daily.dev._ ## Similar posts on daily.dev - [New Firestore query engine enables pipelines](https://daily.dev/posts/new-firestore-query-engine-enables-pipelines-qveysfcui) · Google Cloud · 0 upvotes · 0 comments - [How Firestore Structures Data and How to Perform CRUD Operations With It](https://daily.dev/posts/how-firestore-structures-data-and-how-to-perform-crud-operations-with-it-odioykply) · freeCodeCamp · 1 upvotes · 0 comments - [Firestore Adds Pipeline Operations with Over 100 New Query Features](https://daily.dev/posts/firestore-adds-pipeline-operations-with-over-100-new-query-features-dm1dqw0jf) · InfoQ · 0 upvotes · 0 comments - [Rethinking Data Discovery for Libraries and Digital Humanities](https://daily.dev/posts/rethinking-data-discovery-for-libraries-and-digital-humanities-lf6ytp58i) · Hacker News · 0 upvotes · 0 comments - [Tanstack DB 0.5 Query-Driven Sync: Loading data will never be the same](https://daily.dev/posts/tanstack-db-0-5-query-driven-sync-loading-data-will-never-be-the-same-at4hfmafb) · LogRocket · 31 upvotes · 0 comments --- Tags: [#backend](https://daily.dev/tags/backend), [#firebase](https://daily.dev/tags/firebase), [#firestore](https://daily.dev/tags/firestore) [View this post on daily.dev](https://daily.dev/posts/load-data-faster-and-lower-your-costs-with-firestore-data-bundles--b9ca3iktt) ```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":"Load Data Faster and Lower Your Costs with Firestore Data Bundles!","url":"https://daily.dev/posts/load-data-faster-and-lower-your-costs-with-firestore-data-bundles--b9ca3iktt","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/load-data-faster-and-lower-your-costs-with-firestore-data-bundles--b9ca3iktt"},"datePublished":"2026-08-23T12:20:08.878Z","dateModified":"2026-08-23T12:30:19.326Z","description":"Firestore now supports data bundles in its client SDKs, letting developers serialize documents or query results, host them on a CDN or object storage, and load...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/7ed721de96163685d26ab7e314be3ebc?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/7ed721de96163685d26ab7e314be3ebc?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Firebase","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Firebase","logo":"https://media.daily.dev/image/upload/s--i395oqZH--/f_auto,q_auto/v1787487448/logos/firebase-blog?_a=BAMAMicg0","url":"https://daily.dev/sources/firebase-blog"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/load-data-faster-and-lower-your-costs-with-firestore-data-bundles--b9ca3iktt","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"backend,firebase,firestore","timeRequired":"PT7M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Firebase","item":"https://daily.dev/sources/firebase-blog"},{"@type":"ListItem","position":3,"name":"Load Data Faster and Lower Your Costs with Firestore Data Bundles!"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/load-data-faster-and-lower-your-costs-with-firestore-data-bundles--b9ca3iktt#faq","mainEntity":[{"@type":"Question","name":"What are Firestore data bundles and how do they reduce costs?","acceptedAnswer":{"@type":"Answer","text":"Firestore data bundles are serialized groups of documents, either individual documents or results of a query, that can be stored on a CDN or object storage service and loaded into client applications where they merge with the local cache. 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