--- title: "Discussion on \"How we detected GQL caching issues with an ESLint plugin\" | Hashnode" description: "Discussion on \"How we detected GQL caching issues with an ESLint plugin\". Detecting and resolving GraphQL caching issues using an ESLint plugin for effective cache invalidation and reduced debugging time at Hashnode" url: "https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0" --- [Feed](https://hashnode.com/feed) / Discussion # [How we detected GQL caching issues with an ESLint plugin](https://engineering.hashnode.com/how-we-detected-gql-caching-issues-with-an-eslint-plugin?utm_source=hashnode&utm_medium=feed) Detecting and resolving GraphQL caching issues using an ESLint plugin for effective cache invalidation and reduced debugging time at Hashnode Jul 22, 2024 · 4 min read · engineering.hashnode.com Updated Dec 21, 2024 Read the article - [#graphql](https://hashnode.com/tag/graphql) - [#programming](https://hashnode.com/tag/programming) - [#software-engineering](https://hashnode.com/tag/software-engineering) - [#productivity](https://hashnode.com/tag/productivity) - [#caching](https://hashnode.com/tag/caching) - [#hashnode](https://hashnode.com/tag/hashnode) - [#stellate](https://hashnode.com/tag/stellate) ## Written by [Lakshya Thakur](https://hashnode.com/@lakbychance) @lakbychance · India [View profile](https://hashnode.com/@lakbychance) Creatively Curious 👨‍💻 📸 🎶 🤔 new Have tinkered with JavaScript majorly | I like to solve problems on Stack Overflow, write blog articles, create a side project or do something creative. ## Responses 6 Markdown supported · ⌘↵ to post [max](https://hashnode.com/@maxxmini) [Mar 6](https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0/comment/69aa651ef0968e5daa214d19) This is brilliant — using ESLint to catch cache invalidation issues at dev time instead of discovering them in production. The custom rule approach is much better than relying on code review for this. I ran into a similar pattern building a GraphQL API layer for an automation system. Cache misses after mutations were our #1 source of bugs until we started enforcing `id` field inclusion in mutation responses. Your ESLint approach would have caught those instantly. Curious: did you consider extending this to also detect cases where nested entity references might cause stale cache? e.g., if a `Post` mutation returns `author { id }` but not the updated `author.name`, Stellate would still serve stale author data on the next read. [Tech Simplified](https://hashnode.com/@techsimplifiednews) [Feb 9](https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0/comment/698a6f9853351a0425880e20) Really insightful approach to catching GQL caching issues early! ἺF As someone who works with GraphQL extensively, I"ve seen how caching problems can silently degrade performance and cause confusing UX bugs. The ESLint plugin idea is brilliant - catching these at the linting stage before they hit production is exactly the kind of productivity boost development teams need. Have you considered extending this to detect other common GraphQL anti-patterns? I"m particularly interested in how this handles field selection optimization. Does your plugin also flag inefficient field selections that could benefit from caching strategies? Thanks for sharing the technical details - this kind of proactive tooling is what separates good dev teams from great ones! Ὠ0 [Madeline Dean](https://hashnode.com/@MadelineDeanMadeline) [Oct 1, 2025](https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0/comment/68dd4423283287afbfa38108) Automated test comment for remove reply action. Case A. Timestamp: 2025-10-01T15:09:20Z. Emojis 😀🚀 and specials ¡™£¢∞§¶•ªº. [Madeline Dean](https://hashnode.com/@MadelineDeanMadeline) [Oct 1, 2025](https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0/comment/68dd41b149beb32af2c3a9f7) Third comment for reply like testing. [Madeline Dean](https://hashnode.com/@MadelineDeanMadeline) [Oct 1, 2025](https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0/comment/68dd41b149beb32af2c3a9f7#reply-68dd41c004c854f4b81e5ccd) Reply for like test: case C — minimal 👍 [Madeline Dean](https://hashnode.com/@MadelineDeanMadeline) [Oct 1, 2025](https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0/comment/68dd41b04eb790a16a05b087) Testing reply like 2 – Unicode ¡™£¢∞§¶•ªº 🚀🔥🐍 [Madeline Dean](https://hashnode.com/@MadelineDeanMadeline) [Oct 1, 2025](https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0/comment/68dd41b04eb790a16a05b087#reply-68dd41b549beb32af2c3a9fa) Reply for like test: case B – with unicode 🚀🔥🐍 [Madeline Dean](https://hashnode.com/@MadelineDeanMadeline) [Oct 1, 2025](https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0/comment/68dd408b04c854f4b81e5cb9) Testing reply like 1 - base case [Madeline Dean](https://hashnode.com/@MadelineDeanMadeline) [Oct 1, 2025](https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0/comment/68dd408b04c854f4b81e5cb9#reply-68dd408fbe9fc06c5bff5b1e) Reply for like test: case A [Madeline Dean](https://hashnode.com/@MadelineDeanMadeline) [Oct 1, 2025](https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0/comment/68dd3fa444b0d7c2ef0401e0) Automated test parent comment for reply update action. Timestamp: 2025-10-01T14:50:10Z. Initial text with emojis 😄🚀 and special chars ¡™£¢∞§¶•ªº. [Madeline Dean](https://hashnode.com/@MadelineDeanMadeline) [Oct 1, 2025](https://hashnode.com/posts/how-we-detected-gql-caching-issues-with-an-eslint-plugin/669e419457891592c93297c0/comment/68dd3fa444b0d7c2ef0401e0#reply-68dd3fb0203bc1cb34c3c65f) 第三版の更新 — multilingual test: 日本語, العربية, हिन्दी, 中文, Español, français. Emojis 🌍🧠💡🚴‍♀️. Markdown: - item 1 - item 2 > blockquote [Link](https://example.com/) and bold **strong** and italics _emphasis_. Special chars: ©®™±×÷≤≥ « » “ ” ‘ ’ … — —. JSON-safe quotes " and backslash .