feat: enable caching in projects and contact pages; update next.confi… #151
Conversation
…g.mjs for dynamicIO
|
The latest updates on your projects. Learn more about Vercel for Git ↗︎
|
WalkthroughThe update comprises several modifications across files. The caching mechanism is enabled in multiple modules by adding the Changes
Sequence Diagram(s)sequenceDiagram
participant Browser
participant RootLayout
participant Suspense
participant ChildComponent
Browser->>RootLayout: Request page load
RootLayout->>Suspense: Render children inside Suspense
Suspense->>ChildComponent: Request content
alt Content loading is slow
ChildComponent-->>Suspense: Delay response
Suspense-->>Browser: Display fallback ("Loading...")
else Content loaded quickly
ChildComponent-->>Suspense: Return content
Suspense-->>Browser: Render content
end
Poem
✨ Finishing Touches
🪧 TipsChatThere are 3 ways to chat with CodeRabbit:
Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments. CodeRabbit Commands (Invoked using PR comments)
Other keywords and placeholders
CodeRabbit Configuration File (
|
![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
There was a problem hiding this comment.
Actionable comments posted: 1
🧹 Nitpick comments (2)
app/layout.jsx (2)
57-59: Consider more granular Suspense boundaries.While wrapping the entire app with Suspense works, it might lead to the entire app showing a loading state even when only a small part needs to be loaded. Consider moving Suspense boundaries closer to the components that need them.
57-59: Enhance the loading fallback UI.The current loading fallback is very basic. Consider using a more polished loading UI that matches your app's design.
- <Suspense fallback={<div>Loading...</div>}> + <Suspense fallback={ + <div className="flex items-center justify-center min-h-screen"> + <div className="text-lg text-zinc-500">Loading your experience...</div> + </div> + }>
📜 Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro
⛔ Files ignored due to path filters (1)
package-lock.jsonis excluded by!**/package-lock.json
📒 Files selected for processing (7)
app/contact/page.jsx(1 hunks)app/layout.jsx(2 hunks)app/projects/page.jsx(1 hunks)app/projects/projects.jsx(1 hunks)app/search/page.jsx(1 hunks)next.config.mjs(1 hunks)package.json(1 hunks)
✅ Files skipped from review due to trivial changes (1)
- app/projects/projects.jsx
🔇 Additional comments (6)
next.config.mjs (1)
10-11:✅ Verification successful
Verify the usage of experimental
dynamicIOfeature.The
dynamicIOfeature is being enabled in the experimental configuration. Let's verify its purpose and implications.
🌐 Web query:
What is the dynamicIO feature in Next.js experimental configuration?💡 Result:
The
dynamicIOfeature in Next.js is an experimental configuration designed to optimize dynamic data fetching in applications using the App Router. Here's a detailed breakdown:Core Functionality
dynamicIOchanges default behavior by:
- Excluding data fetching operations from pre-renders unless explicitly cached[1]
- Requiring explicit
use cachedirectives for caching[1][6]- Enabling fresh runtime data fetching by default while allowing selective caching[1]
Key Use Cases
- Applications requiring real-time data updates during runtime[1]
- Projects needing granular control over cached vs fresh content[9]
- Scenarios where partial page updates are preferable to full re-renders[3]
Configuration
Enable in
next.config.ts:import type { NextConfig } from 'next' const nextConfig: NextConfig = { experimental: { dynamicIO: true, }, } export default nextConfigAssociated Features
When enabled,
dynamicIOunlocks:
use cachedirective for component-level caching[1][6]cacheLifefor custom cache duration profiles[7][9]cacheTagfor targeted cache invalidation[1]Tradeoffs
While improving freshness:
- May increase latency vs static pre-rendering[1]
- Requires careful cache strategy planning[9]
- Currently only available in Next.js canary releases[4]
This experimental feature represents Next.js' ongoing efforts to balance static optimization with dynamic content needs. Developers should test thoroughly and monitor framework updates as the implementation evolves.
Citations:
- 1: https://nextjs.org/docs/app/api-reference/config/next-config-js/dynamicIO
- 2: https://nextjs.org/docs/app/api-reference/config/next-config-js/useCache
- 3: https://nextjs.org/docs/app/api-reference/config/next-config-js/staleTimes
- 4: Experimental feature "dynamicIO" only available on Canary vercel/next.js#72101
- 5: https://nextjs.org/docs/app/api-reference/config/next-config-js/devIndicators
- 6: https://nextjs.org/docs-wip/app/api-reference/config/next-config-js/useCache
- 7: https://nextjs.org/docs/app/api-reference/functions/cacheLife
- 8: https://nextjs.org/docs/app/api-reference/config/next-config-js/typedRoutes
- 9: https://nextjs.org/docs/app/api-reference/config/next-config-js/cacheLife
- 10: https://github.com/vercel/next.js/actions/runs/10601931219/workflow
Action: Confirm the experimental dynamicIO configuration
The
dynamicIOflag is an experimental feature intended to optimize dynamic data fetching in applications using the App Router. When enabled, it modifies the default behavior by excluding data fetching from pre-renders unless cached explicitly (using directives likeuse cache). This provides immediate, fresh runtime data fetching but comes with trade-offs such as potential latency increases if caching isn’t properly configured.
- Verify that your use case benefits from this dynamic behavior.
- Ensure you’ve reviewed your caching strategy, since enabling
dynamicIOmeans you must handle caching explicitly.- Confirm that you’re comfortable with the experimental nature of the feature as outlined in the Next.js documentation.
No further changes are required if this configuration aligns with your project’s requirements.
app/search/page.jsx (1)
1-2:❓ Verification inconclusive
Verify the usage of 'use cache' directive.
The 'use cache' directive is being used to enable caching for this React Server Component.
🌐 Web query:
What is the 'use cache' directive in React Server Components and when should it be used?💡 Result:
The
'use cache'directive is an experimental Next.js feature (not a native React directive) that enables caching of components, functions, or entire routes in React Server Components (RSCs). It improves performance by reusing cached results for subsequent requests while maintaining server-side rendering benefits[1][3][4].Key Characteristics
- Caching Scope:
- File-level: Caches all exports in a file (e.g., layouts/pages)[1][4]
- Component/function-level: Caches individual components or data-fetching functions[1][3]
- Serialization Requirements:
- Arguments/props and return values must be serializable[1]
- Non-serializable values (e.g., JSX children) become opaque references excluded from cache keys[1]
When to Use It
Entire Route Prerendering
Add'use cache'to bothlayout.tsxandpage.tsxfiles to prerender static HTML shells[1][4]:// app/page.tsx 'use cache' export default async function Page() { const data = await fetch('/api/data') // Cached fetch return <div>{data}</div> }Reusable Component Output
Cache components with serializable props for shared cache entries:// app/components/ProductList.tsx export async function ProductList({ category }) { 'use cache' const products = await fetch(`/api/products?category=${category}`) return <ul>{/* Render products */}</ul> }Interleaving Dynamic Content
Pass non-serializable data (e.g., client components) through cached components without invalidating the cache[1]:// app/page.tsx export default async function Page() { const dynamicData = await getUncachedData() return ( <CachedComponent> <ClientComponent data={dynamicData} /> </CachedComponent> ) } async function CachedComponent({ children }) { 'use cache' const cachedData = await fetch('/api/cached') // Cached call return <div>{cachedData}{children}</div> }Configuration Requirements
Enable in
next.config.js:module.exports = { experimental: { useCache: true // or enable via dynamicIO flag[4] } }Limitations
- Experimental feature subject to API changes[1][3]
- Requires serializable arguments/return values[1]
- Not compatible with side effects like state mutations or timers[1]
- Primarily intended for server-side rendering workflows[2][5]
For comparison:
Feature use cacheReact cache()unstable_cacheScope Components/routes Functions JSON data only Data Types Any serializable Any serializable JSON only Framework Next.js RSCs React Server Components Legacy Next.js Use
'use cache'when optimizing server-rendered routes/components with reusable static/dynamic content hybrids[4][8]. For client-side caching, prefer React Query or similar libraries[2][5].Citations:
- 1: https://nextjs.org/docs/app/api-reference/directives/use-cache
- 2: https://codingmall.com/knowledge-base/25-global/1056-how-does-react-cache-api-interact-with-react-server-components
- 3: https://blog.nidhin.dev/nextjs-use-cache-directive
- 4: https://www.nextjscourse.dev/courses/nextjs-course/use-cache-deep-dive
- 5: https://dev.to/oyedeletemitope/understanding-the-react-cache-function-4cae
- 6: https://react.dev/reference/react/cache
- 7: [Suggestion]: Clarification on react.cache Usage in Server Requests reactjs/react.dev#6671
- 8: https://nextjs.org/docs/app/building-your-application/rendering/server-components
- 9: https://community.datocms.com/t/data-fetching-in-react-server-components/7513
- 10: https://react.dev/reference/rsc/use-server
Review: Verify the Experimental 'use cache' Directive Usage
File: app/search/page.jsx (Lines: 1-2)
The current file includes the line:
'use cache';This directive is an experimental Next.js feature designed for caching exports in React Server Components. Its use can improve performance by caching entire files or specific components, provided that the inputs (props, arguments) and outputs are fully serializable.
Please ensure that:
- The component’s outputs and any props or arguments conform to serialization requirements.
- The caching strategy aligns with your intentions (e.g., caching entire routes vs. individual components).
- The experimental caching feature is enabled in your configuration (e.g., setting
experimental: { useCache: true }innext.config.js).Confirm that these conditions are met to safely proceed with using the
'use cache'directive.app/projects/page.jsx (1)
7-8: LGTM! Consistent caching strategy.The 'use cache' directive is consistently applied across pages, and the component correctly uses Suspense for loading states.
app/contact/page.jsx (2)
1-1: LGTM! Good use of caching for performance optimization.The addition of the 'use cache' directive is a good optimization for this page since contact information doesn't change frequently. This aligns well with the PR objectives to enable caching.
13-114: LGTM! Well-structured component with good practices.The component demonstrates several good practices:
- Parallel data fetching with Promise.all
- Proper error handling
- Good separation of concerns
- Semantic HTML and accessibility attributes
package.json (1)
16-16:❓ Verification inconclusive
Verify the Next.js version update.
Let's check the changelog for any breaking changes in this minor version update.
🌐 Web query:
What are the breaking changes between Next.js 15.0.2 and 15.1.4?💡 Result:
Next.js 15.1 introduced several key breaking changes compared to 15.0.x versions (including 15.0.2). Here's what developers need to know:
Core Breaking Changes
1. React Version Requirement
- Minimum React version is now 19 (previously required ≥18) [3][8]
- Requires updating both
reactandreact-dompackages2. Async Request APIs (Breaking)
- Synchronous request methods became asynchronous:
// Before (Next.js ≤14) const cookies = cookies() const headers = headers() // After (Next.js ≥15) const cookies = await cookies() const headers = await headers()This affects:
cookies()headers()draftMode()[8]3. Caching Semantics
GETRoute Handlers no longer cached by default- Client Router Cache:
// next.config.ts export const config = { staleTimes: { static: 0 // Previously defaulted to 5 minutes } }
- Fetch requests use fresh data by default unless revalidation configured [4][6]
Configuration Changes
4. Renamed Config Options
// next.config.js // Before (experimental) experimental: { bundlePagesExternals: true, serverComponentsExternalPackages: ['pkg'] } // After (stable) bundlePagesRouterDependencies: true, serverExternalPackages: ['pkg'][8]
5. Security Enhancements
- Server Actions now generate non-deterministic IDs
- Unused Server Actions get tree-shaken from client bundles [4]
Infrastructure Changes
6. Self-Hosting Requirements
- Sharp image optimization now auto-installed (previously optional)
- Cache-Control header defaults modified:
Cache-Control: public, max-age=31536000, stale-while-revalidate=60[4]
Migration Path
Use Vercel's official codemod:
npx @next/codemod@canary upgrade latestOr manually update dependencies:
npm install next@latest react@latest react-dom@latest eslint-config-next@latest[8]
Developers should particularly watch for hydration error improvements that now show source code context, requiring updates to error handling patterns [4][6]. The memory management changes in Azure deployments (fixed in later patches) also warrant monitoring when upgrading to 15.1.x [7].
Citations:
- 1: https://nextjs.org/blog/next-15-1
- 2: https://pagepro.co/blog/react-tldr/next-js-15-1-update/
- 3: https://ordergroup.co/resources/article-business-and-technical/next-js-15-what-is-new/
- 4: https://nextjs.org/blog/next-15
- 5: https://www.npmjs.com/package/next/v/15.1.4
- 6: https://www.youtube.com/watch?v=H6wot9plHZQ
- 7: Memory spike issue with Next.js 15.1.4 on Azure vercel/next.js#74855
- 8: https://nextjs.org/docs/app/building-your-application/upgrading/version-15
- 9: https://github.com/vercel/next.js/releases
- 10: https://nextjs.org/blog
Action Required: Verify Next.js 15.1.4 Upgrade Impact
The upgrade to Next.js 15.1.4 introduces several critical breaking changes compared to 15.0.2. Please review the following points to ensure that all necessary adjustments are made across the codebase:
- React Version: Next.js 15.1.4 now requires a minimum of React 19 (up from React 18). Ensure that the
reactandreact-domdependencies are updated accordingly.- Async Request APIs: Functions such as
cookies(),headers(), anddraftMode()have transitioned from synchronous to asynchronous. Check that these are handled withawaitwhere they’re used.- Caching & Configuration: Be aware of changes in caching defaults and renamed configuration options in
next.config.js. Verify that any custom caching strategies or experimental settings are updated to match the new behavior.- Other Infrastructure Changes: Assess any additional modifications (e.g., image optimization auto-install and Cache-Control header adjustments) that might affect your deployment.
Please confirm that these breaking changes are adequately addressed so that the upgrade won't introduce runtime issues.
| "react": "^19.0.0-rc-603e6108-20241029", | ||
| "react-dom": "^19.0.0-rc-603e6108-20241029", |
There was a problem hiding this comment.
💡 Verification agent
🧩 Analysis chain
Consider using stable React versions instead of RC builds.
The React and React DOM dependencies are using very recent RC (Release Candidate) builds. These might be unstable for production use.
🌐 Web query:
What is the latest stable version of React?
💡 Result:
The latest stable version of React is 19.0.0, released on December 5, 2024[1][3][4][5][6]. This version introduces significant features like Actions, new hooks (useActionState, useFormStatus, useOptimistic), Server Components/Server Actions[3][5], and improvements to hydration diffs and Context API[5].
Key details:
- Active Support: Yes (non-critical bugfixes and new features)[1]
- Security Support: Yes (critical security patches backported)[1]
- Notable Changes:
- New JSX transform requirement[5]
- Deprecation warnings added in React 18.3[5]
- Removal of legacy APIs like string refs and
propTypes[5]
For new projects created today (February 22, 2025), npx react-native init would use this version automatically if working with React Native[2]. The previous major version (React 18.x) reached end of active support on December 5, 2024[1].
Citations:
- 1: https://endoflife.date/react
- 2: https://reactnative.dev/versions
- 3: https://en.wikipedia.org/wiki/React_(software)
- 4: https://react.dev/blog/2024/12/05/react-19
- 5: https://github.com/facebook/react/releases
- 6: https://react.dev/versions
- 7: https://legacy.reactjs.org/versions/
- 8: https://www.npmjs.com/package/react?activeTab=versions
Action: Update React Dependencies to the Latest Stable Version
It appears that the current dependencies in package.json are using React release candidate builds:
"react": "^19.0.0-rc-603e6108-20241029",
"react-dom": "^19.0.0-rc-603e6108-20241029",Based on the latest web query, the stable version of React is 19.0.0. For production stability and to ensure you're benefiting from the latest features and support, please update these dependencies as follows:
- Update
"react"to"^19.0.0". - Update
"react-dom"to"^19.0.0".
This change replaces the RC builds with the stable release, aligning the project with production-ready versions.
**
…g.mjs for dynamicIO
https://www.youtube.com/watch?v=19g66ezsKAg&t=2029s
Summary by CodeRabbit
New Features
Chores