Articles 28–36 of 50.
The eight JSON syntax errors that account for nearly every parse failure, what the error messages actually mean, and how to locate the problem quickly.
The TweakPad Team
Naming conventions, date formats, null handling and the structural choices that make JSON easy to consume — plus what the spec does and does not allow.
The TweakPad Team
How next/image prevents layout shift, what sizes and priority actually do, and the configuration mistakes that make images slower rather than faster.
The TweakPad Team
How Server Actions work, why they are safer than an API route for form handling, and the validation and authorisation you must not skip.
The TweakPad Team
The Request Memoization, Data Cache, Full Route Cache and Router Cache — what each one caches, how long for, and how to opt out correctly.
The TweakPad Team
How to use the native Metadata API for titles, canonicals, OpenGraph, Twitter cards and JSON-LD — and why next-seo is unnecessary in the App Router.
The TweakPad Team
A practical tour of the App Router — layouts, route groups, loading and error boundaries, dynamic segments and generateStaticParams — and when to use each.
The TweakPad Team
A diagnosis-first guide to React performance — how to find the real bottleneck with the Profiler, and the five fixes that account for most real-world wins.
The TweakPad Team
What React does with keys during reconciliation, the concrete bugs index keys cause, and how to pick a key when your data has no id.
The TweakPad Team