TTFB, caching & CDN
Fix the server layer before you chase frontend micro-optimizations.
Improve Time To First Byte with caching layers, CDN rules, backend bottleneck fixes, and measurable performance baselines-so speed gains are predictable and repeatable.
Website Speed Optimization / TTFB, Caching & CDN
Reduce Time To First Byte with caching layers that scale
(and don’t break checkout)
TTFB is the "server says hello" moment. If it’s slow, everything feels slow-especially on mobile. We diagnose what’s keeping the origin from responding, then design caching layers (application + CDN) that speed up key templates without creating messy cache invalidation bugs.
This isn’t just about toggling a CDN. It’s about correct cache keys, safe bypass rules, coherent headers, and predictable purging-so your store stays fast while pricing, inventory, personalization, and promotions keep changing.
Back to the hub: Website Speed Optimization. Related playbooks: Core Web Vitals Optimization, Third-Party Script Governance.
Adjacent services: Hosting, Development, Technical SEO, Case Studies.
What we fix to improve TTFB (and keep it stable)
Fast TTFB comes from a clean request path: fewer expensive operations at the origin, smart caching, and consistent delivery from the edge. We focus on improvements that are measurable, safe, and repeatable.
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Fix the critical path
Origin bottlenecks
Slow application boot, heavy middleware, database contention, or expensive third-party calls. We identify the critical path and remove the worst offenders.
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Repeatable speed
Caching strategy (page + data)
Full-page caching where safe, fragment caching for shared components, and object/data caching for high-frequency queries-designed around your templates.
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Edge delivery, correct rules
CDN rules + cache keys
Correct cache key configuration (cookies, query params, headers), safe bypass for cart/checkout/account, and smarter TTLs to reduce origin load.
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Fast and correct
Cache invalidation + purge governance
Purging is where performance work often breaks. We implement predictable invalidation (by template, tag, or entity) so promos and stock changes stay correct.
Core Web Vitals, TTFB & Caching, Third-Party Scripts, Real-User Monitoring, LCP & INP, Conversion Impact
Map requests, add layers, validate conversion
We don’t ship "performance tweaks" in isolation. We map how requests flow through your stack, implement caching safely around eCommerce constraints, then validate improvements on the templates that drive revenue.
Baseline + template focus
We measure TTFB (lab + real traffic), then focus on your key templates: homepage, category, product, cart/checkout, CMS pages-mobile first.
Request-path diagnosis
We identify what the origin is doing on each request (DB, APIs, compute), then propose fixes: caching, query optimization, indexing, and architectural changes.
Implementation + safe bypass rules
We implement caching + CDN configuration with strict rules for cart/checkout/account and personalization-so speed doesn’t create "wrong content" issues.
Validation + regression prevention
We re-test, monitor, and document cache behavior. For long-term stability, combine this with Third-Party Script Governance.
TTFB, Caching & CDN - Packages
Make the origin fast. Then let the edge do the work.
Start with a clear diagnosis, then implement the caching layers that reduce load and keep performance stable-even as your store changes daily.
| What you get | Audit & Roadmap | Implementation Sprint |
|---|---|---|
| Best for | Teams that need to understand what’s slowing down the origin | Teams ready to ship caching + CDN improvements safely |
| Diagnostics | TTFB breakdown + request-path mapping | Re-testing + validation after changes |
| Deliverables | Caching strategy + CDN rule set | Implemented caching layers + documentation |
| Governance | Purge / invalidation recommendations | Stable invalidation + operational guidelines |
| Primary next step | Request audit | Book a discovery call |
Audit-first performance