Topic

Performance

Measured guidance for faster sites: loading, rendering, caching, Core Web Vitals, and resilient delivery.

Two browser render frames align around a small mismatched block.

August 7, 20263 min readUpdated August 24, 2026

Fix Next.js Hydration Errors in Production Without Guessing

A practical way to find the first server and browser difference behind a Next.js hydration error, with fixes for dates, browser APIs, HTML nesting, and extensions.

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Web frameworks Performance

Several request lanes merge into a shorter route before a page renders.

August 7, 20263 min readUpdated August 24, 2026

Fix Slow Next.js Server Actions and Data Fetching

Find why a Next.js App Router page or Server Action feels slow, then fix waterfalls, duplicate queries, uncached fetches, and slow post-action refreshes.

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Web frameworks Performance