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30 Jul 2025 / Tech
Next.js 15.4 is here, and it’s more than just a typical update. This version marks a major milestone for the framework and its growing ecosystem. While each release usually offers useful improvements, this one feels different. It shows real momentum, especially for developers who have been following the evolution of Turbopack closely.Turbopack has been talked about for a while as the future of frontend bundling, but up until now, it hasn’t quite felt “ready” for serious production use. That changes with 15.4. This new release introduces significant improvements and sets the stage for what’s next, with the arrival of Next.js 16 later this summer.So, if you’ve been holding off on upgrading, waiting to see if Turbopack is finally stable enough, or simply curious about what’s new under the hood, you are in the right place. In this article, we’ll break down what’s new in 15.4, explore some hidden gems, and take a quick look at what’s ahead in the Next.js roadmap.Next.js 15.4: Key highlightsTurbopack builds hit 100% test coverageOne of the standout highlights in the Next.js 15.4 release is that the next build --turbopack successfully passes all 8,302 integration tests for production builds. That’s thousands of edge cases, regressions, and real-world scenarios that are now confidently handled by Turbopack.It’s a major milestone in the framework’s evolution, bringing this new bundler one step closer to becoming the default. The significance of this milestone becomes even clearer when you consider that Vercel is now using Turbopack to power its high-traffic site. This is a strong signal that Turbopack is no longer experimental; it’s reliable.What does this mean for developers now?While 15.4 doesn’t introduce flashy new features for Turbopack, it does bring significant improvements under the hood. A wide range of performance tweaks and stability fixes have made the build process smoother and more reliable. If you tried Turbopack a few months ago and ran into trouble, now’s a great time to give it another shot.The team’s main focus moving forward is on two priorities: completing bundling optimizations through production chunking and fixing bugs reported by early adopters of the Alpha release. The goal is to officially transition Turbopack into beta with the release of Next.js 16, a milestone that’s now within reach thanks to the groundwork laid in 15.4.In short, Turbopack has improved considerably. It’s now fast, stable, and on track to become a viable replacement for Webpack in production environments.Notable changes: Features, fixes, and improvementsNext.js 15.4 isn’t just about Turbopack; it’s packed with practical improvements that solve real problems developers face every day. Let’s break down the changes that are likely to impact your workflow:FeaturesSeveral practical features have been introduced to enhance both the development workflow and production behavior:Prefetch invalidation Hook — Introduces an onInvalidate callback for router.prefetch() . When cached data becomes stale, this Hook triggers automatic re-fetching, useful for custom navigation components requiring real-time synchronization without relying on Next.js’s built-in <Link>Link prefetch semantic alias — Introduces prefetch="auto" as syntactic sugar for prefetch={undefined}, improving code readability while maintaining the default adaptive prefetch behaviorMetadata support for global-not-found pages — Enables full metadata export capabilities in global-not-found.js, allowing customized SEO tags and structured data for 404 pagesNew CLI flag —--debug-prerender — Introduces the --debug-prerender flag to next build, providing detailed diagnostics and full error stacks to help troubleshoot issues with partial pre-rendering (PPR) and static generation, strictly for development use, not productionhtmlrewriter in server externals — Enables use of the htmlrewriter package within server runtimes for HTML transformationsPartial pre-rendering support for intercepted routes — Expands the capabilities of partial pre-rendering by supporting dynamic routes with intercepting behaviorFixesThis release also resolves several important bugs and issues.Config module cloning to avoid mutation — Prevents unintended side effects by ensuring configuration objects are safely duplicatedPrefetch cache consistency — Ensures staleTime propagates to seeded prefetch entries and fixed stale prefetch retention for static pagesFix for Vary header reinstatement — Restores proper handling of the Vary response header for better caching behaviorReact Compiler adjustments — Fixes inconsistencies in the compiler’s detection of “interestingness” and “usefulness,” thereby improving compilation accuracyFix for edge-case file paths in launchEditor — Improves developer experience by gracefully handling unexpected file path formats when using the editor launch utilityServer action fixes — Fixed bodySizeLimit errors with non-multipart actions and ensured proper 404 responses for invalid action IDs, thereby improving server action reliabilityImprovementsThis release also includes improvements to existing features.Preserve RSC queries on redirect — Ensures that server component queries are preserved when performing redirects, avoiding broken navigation flowsGraceful fallbacks for bots — Introduces a specialized error fallback for crawler bot requests to preserve SEO integrity during render failuresDisallow unstable_rootParams in client components — Enforces boundaries between server and client components by disallowing the use of unstable root parameters in client contextsRSC request validation — Added cache-busting parameter verification to RSC (React Server Components) requests, preventing redundant processing of invalidated queriesDependency management — Marked assert/strict as an external dependency and upgraded @vercel/og to 0.7.2 for improved image generationStreaming metadata — Ensures streaming metadata is always rendered at the top-level position, preserving a valid document structureAutomatic omission of searchParam data in FlightRouterState before transport — Reduces payload size and avoids unnecessary rerenders in streamed routingHidden gems in Next.js 15.4While the major features capture most of the attention, Next.js 15.4 includes some smaller improvements that may go unnoticed but offer significant value to developers working on specific use cases:Dev server UXThis adds the ability to restart the dev server directly from the error overlay and indicator preferences, improving iteration speed during debugging. While seemingly small, this enhancement can drastically speed up debugging cycles, especially during local development with hot module replacement issues.Performance enhancementsThe team has made significant efforts in improving static path generation performance and parameter handling. They have also optimized the React Compiler integration by checking files with SWC (Speedy Web Compiler) first, which should result in faster compilation times across the board.Additionally, the improved CPU profiling support during development (NEXT_CPU_PROF usage fixes) might not seem exciting, but for teams dealing with performance bottlenecks, being able to capture accurate CPU traces during development is invaluable. This is the kind of tooling that separates professional-grade frameworks from hobby projects.
30 Jul 2025 / Tech
The React ecosystem is constantly evolving, with new libraries and frameworks pushing the boundaries of performance, flexibility, and developer experience. For years, Next.js has been the go-to choice for building full-stack React applications, thanks to its server-first approach, built-in support for server-side rendering (SSR), static site generation (SSG), and intuitive file-based routing.But recently, new contenders have entered the scene, one of the most notable being TanStack Start. Built by the team behind widely-used tools like TanStack Query, TanStack Router, and TanStack Table, this new framework offers a fresh take on full-stack React development.TanStack Start brings a fresh perspective to full-stack React development. It embraces a client-first architecture, yet still supports powerful capabilities like full-document server-side rendering (SSR), streaming, and server functions. If you’re looking to move away from boilerplate-heavy workflows and want type-safe routing, smarter data fetching, and the flexibility to structure your app your way, TanStack Start might be exactly what you need.In this article, we’ll explore a detailed comparison between TanStack Start and Next.js, breaking down their core architectures, routing strategies, data-fetching approaches, performance optimizations, and more. Whether you’re building a highly dynamic single-page app or a content-heavy website, understanding the strengths and trade-offs of each framework will help you make a more informed choice.What sets them apart: A feature comparisonEvery framework is shaped by a foundational set of features that define its architecture, development experience, and overall capabilities. To better understand what TanStack Start and Next.js offer, it helps to compare their core features side by side and highlight how they differ in philosophy and functionality.Here’s a quick summary of the key differences between the two frameworks:FeatureNext.jsTanStack StartCore architectureServer-first with SSR, SSG, ISR by defaultClient-first SPA by defaultRoutingFile-based routing systemBoth file-based and code-based routingData fetchingSupports SSG/SSR methods, client HooksUses isomorphic loaders, built-in QueryTypeScript and developer experienceTypeScript compatibleTypeScript nativePerformance optimizationBuilt-in optimizationsManual controlBuild and deploymentZero-config with TurbopackConfigurable with Vite and NitroBest use casesIdeal for content-rich websites, e-commerce platforms, and enterprise applications that benefit from built-in rendering strategies like SSG/SSR/ISR and seamless deployment on VercelSuited for highly interactive, data-driven applications such as dashboards and internal toolsCore architectureNext.js embraces a server-first architecture aimed at optimizing performance and delivering a seamless user experience. It emphasizes server-side rendering (SSR), static site generation (SSG), and incremental static regeneration (ISR), enabling full or partial pre-rendering of pages on the server. This approach results in faster initial page loads, improved SEO, and smaller client-side bundles.With the introduction of the App Router, Next.js now incorporates React Server Components (RSC) and server actions, allowing developers to more efficiently blend client and server logic.In contrast, TanStack Start takes a client-first approach, treating applications as single-page apps (SPAs) by default. This enables faster route transitions and rich client-side interactivity. That said, it doesn’t compromise on server-side capabilities, instead, it supports full-document SSR, streaming, and server functions powered by tools like Vite and Nitro.At the heart of TanStack Start’s architecture is TanStack Router, a fully type-safe, enterprise-grade routing system. While the client stays in control, developers can progressively opt into SSR and SSG as needed, making TanStack Start a highly flexible, modern full-stack solution.Routing approachesNext.js uses a file-system-based routing system. The structure of the pages or app directory directly maps to your application’s routes. For example, creating a file at pages/about.js automatically sets up a route at /about. Nested routes are created by organizing folders hierarchically; pages/blog/post.js corresponds to the /blog/post route.This approach simplifies routing, especially for developers who prefer a convention-over-configuration paradigm. It eliminates the need for explicit route declarations and speeds up development. However, in complex applications that require advanced dynamic routing or more customizable behavior, this system can become limiting. Because route definitions are tied to the file system, flexibility may suffer in highly dynamic use cases.TanStack Start, on the other hand, uses TanStack Router, a fully type-safe routing solution that supports both file-based and code-based routing, providing significantly more flexibility.
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গুরুত্বপূর্ণ বাক্য সংকোচন / এক কথায় প্রকাশ ক্রমিক নং প্রদত্ত বাক্য বাক্য সংকোচন / এক কথায় প্রকাশ ডাক ১ অশ্বের ডাক হ্রেষা ২ ময়ূরের ডাক কেকা ৩ বাঘের ডাক গর্জন ৪ পেঁচা বা উলূকের ডাক ঘূৎকার ৫ পাখির ডাক কূজন / কাকলি ৬ কোকিলের ডাক কুহু ৭ কুকুরের ডাক বুক্কন ৮ মোরগের ডাক শকুনিবাদ ৯ হাতির ডাক বৃংহিত / বৃংহণ ১০ সিংহের নাদ / ডাক হুংকার ১১ রাজহাঁসের কর্কশ ডাক ক্রেঙ্কার
