Firebase Hosting Headers Config: Cache, Security, CORS
The headers block in firebase.json controls cache TTL, security policy, and CORS. Here is the minimum config that ships fast and safe — and the patterns that cost you.
#Hosting
Articles tagged with #Hosting
Vercel Edge Functions for Content Sites: When They Help
Edge Functions sound great on the slide deck, but most content sites do not need them. Here is when Edge actually wins, when Node serverless is better, and when static is the right answer.
Vercel ISR vs SSG for Content Sites: Which Wins
ISR sounds modern, SSG sounds old, but for a content site the choice is concrete. Here is the actual trade-off in build time, freshness, cost, and rollback.
Vercel Monorepo Content Site Deploy: Turbo + Multiple Apps
Deploying a content site from a Turborepo monorepo on Vercel is mostly settings, not magic. Here is the exact root config, ignored builds, and shared package wiring that works.
Build Output Exceeds Platform Size Limit
Vercel / Cloudflare Pages all have a size cap — one bloated dependency can blow it.
Cloudflare Pages Build Cache Stays Stale
Local `npm i` pulls new deps but CF Pages still ships old ones — node_modules cache stuck.
Deploying an Astro Site to Firebase Hosting
Step-by-step on deploying a static Astro site to Firebase Hosting, with the configuration that avoids the common pitfalls in 2026.
Deploy a static site to Firebase Hosting: step-by-step
A no-nonsense 2026 walkthrough for shipping a static site (Astro, Vite, plain HTML) to Firebase Hosting in about 10 minutes — including SSL, custom domain, and cache headers.
Firebase Hosting cache & how to force fresh content after deploy
Deployed but visitors see the old page? Use this firebase.json cache-header config, curl diagnostic, and rollback to flush stale content in seconds.
Connecting a custom domain to Firebase Hosting
Add a custom domain to Firebase Hosting with the exact DNS records, dig commands for verification, and the common failures explained.
Firebase Hosting free tier: what you actually get
The Firebase Spark free tier in 2026 gives 10 GB storage + 360 MB/day egress. Use this page-weight math, budget config, and asset checklist to know if you fit.
Firebase Hosting go-live checklist (10 items)
A 10-item pre-launch checklist for sites going live on Firebase Hosting in 2026 — covering domain, SSL, cache, redirects, sitemap, Search Console, and rollback rehearsal.
Firebase Hosting rewrites — when to use them, when not to
Rewrites in Firebase Hosting let you map URLs to functions, Cloud Run, or single-page apps. Here is when each pattern is the right tool — and when rewrites cause more problems than they solve.
Why your Firebase route 404s after deploy (and how to fix it)
Pages that worked locally return 404 on Firebase Hosting. Use this diagnostic checklist with firebase.json snippets and curl commands to pinpoint the cause.
Is Vercel a good choice for content sites?
Vercel is famous for Next.js, but it is also excellent for Astro content sites. Use this vercel.json setup, image config, and bandwidth math to decide.
Common causes for "Vercel build failed" (and the fastest fixes)
Vercel build failures are usually one of six causes — Node version, env var, type error, dependency, OOM, or stale cache. Match the log, paste the fix.
Vercel content site go-live checklist (10 items)
A pre-launch checklist for content sites going live on Vercel in 2026 — covers Astro / Next.js settings, custom domain, env vars, sitemap, canonical, analytics, and rollback.
Adding a custom domain on Vercel (and what waits to break)
Point a custom domain at Vercel with the exact DNS records, dig + curl verification, and Cloudflare-in-front configuration that does not break SSL.
Deploying an Astro site on Vercel: the 10-minute path
Ship an Astro site on Vercel with the exact astro.config.mjs, vercel.json, CLI commands, and SSL verification — no detours.
Vercel Hobby vs Pro: when to upgrade
Vercel Hobby is free non-commercial; Pro is $20/seat/mo. Use this limits table, project audit script, and budget config to decide.
What is Firebase Hosting (and who is it for in 2026)
Firebase Hosting is Google's static + edge CDN service tied to Firebase. Here is when it fits, with the firebase.json baseline and deploy commands.
What is Vercel (and how it differs from Firebase Hosting)
Vercel is a framework-native platform — first-class for Next.js, Astro, SvelteKit. Get the mental model, sample vercel.json, and a 5-minute deploy.
When to Buy a Domain (And When to Wait)
Decide when to buy a custom domain — with a checklist, WHOIS / trademark commands, and registrar checks that prevent expensive regret.
Astro Pages 404 After Deploy
Pages exist in dev but 404 in prod — almost always `build.format`, trailing slash, or output mode mismatch.
Canonical Wrong After Domain Change
Switched domains but old canonical still appears — config + cache.
Custom Domain SSL Provisioning Stuck
SSL pending for hours after domain hookup — usually DNS or CAA.
Deploy Succeeded But Page Still Shows Old Content
Vercel / Firebase says deploy ok, but visitors see yesterday's version.
DNS Propagation Confusion — Why Different Regions See Different IPs
You changed DNS and some users see new, some see old. Here's why and how to test.
Environment Variable Missing in Production
Works locally, fails prod — env var not set, or prefix issue (PUBLIC_ / VITE_ / NEXT_PUBLIC_).
Firebase Hosting Deploy Fails
Hosting deploy fails — CLI version, quota, or firebase.json config.
How to Fix Firebase Hosting Route 404: SPA, SSG, Subpath — All Cases
After deploying to Firebase Hosting, the homepage works but /about and other subpages return 404? Your firebase.json rewrites are misconfigured. Fixes for SPA, SSG, static multipage, Astro, and Next.js.
OG Image Not Appearing on Social Shares
Share to LinkedIn / X / Slack and no image shows — meta tag, image size, or cache.
Redirects Not Working After Deploy
You configured redirects but they don't fire — order, format, host quirks.
robots.txt Not Taking Effect
You changed robots.txt but Google still crawls / indexes the same URLs.
RSS Feed Returns 404 — /rss.xml Missing Fix
/rss.xml or /feed.xml 404 — endpoint missing, wrong filename, or host caching.
sitemap.xml Not Found — Integration / Site Fix
/sitemap.xml or /sitemap-index.xml returns 404 — integration off or `site` missing.
Static Assets 404 After Deploy
Images and CSS 404 after deploy but work locally. Five typical causes — missing dist/ copy, base path, content hash, public folder, host upload step.
Static Site Renders Blank Page
Browser shows nothing, no error — almost always hydration or JS import failure.
Trailing Slash Mismatch — Double Redirects
/foo redirects to /foo/ then to /foo (or 308 → 301 chain). Pick one and stick to it.
Vercel 500 Errors — Common Causes
Site builds but 500s in production — usually serverless function, env vars, or edge runtime.
Vercel Deploy Stuck on "Building"
Build never finishes — typically OOM, dependency deadlock, or build timeout.
Deploying a Next.js Site on Vercel: The 10-Minute Path (2026)
Step-by-step 2026 guide to deploying Next.js on Vercel — auto-detection, environment variables, ISR, image optimization, and the App Router gotchas indie devs lose half a day to.
Vercel Build Failed: The 3 Places to Read in the Log
When a Vercel deploy goes red, the log already tells you what's broken — if you know where to look. Three key positions, plus the five most common failure modes.
Firebase Hosting vs Vercel: A Practical Indie-Dev Comparison
Both have generous free tiers and great DX. Here's how Firebase Hosting and Vercel differ on serverless, ecosystem, deployment, SEO, and pricing in 2026.