E-Commerce: Caching & CDN
A well-configured caching stack makes your shop faster and significantly reduces server load — static pages don't hit the database on every request, assets are served from the nearest edge server, and users worldwide experience the same fast result. We implement multi-layer caching with Varnish or Shopware HTTP Cache, object caching with Redis, and CDN integration — coordinated and production-ready configured.
Caching & CDN challenges
When your shop is slow even though the server barely seems loaded, the problem usually lies in caching. Shopware re-renders every request instead of holding results ready, product images travel from a distant origin server for international customers, and the moment a newsletter or campaign drives traffic up, performance simply buckles.
What matters for Caching & CDN
Caching is the most effective performance measure, but only as a layered model. HTTP caching, object caching with Redis and a CDN for static assets each solve a different problem on a different level of the stack. Only the coordinated combination delivers genuinely low load times, while a single layer quickly hits its limits in a complex shop.
The genuinely hard problem is not caching but invalidation. Setting up a cache is easy, but ensuring customers see current data immediately after a price or stock change is the demanding discipline. Wrong invalidation shows up as phantom stock or stale prices and costs exactly the trust that fast pages are meant to build.
A CDN takes measurable load off the origin server while improving global load time. When static assets are served from edge servers, a large share of requests never reaches the origin, which lowers bandwidth costs and noticeably speeds up users far from the server location. This is exactly where the difference shows for an international audience.
Good caching work is configured production-ready, not just switched on. Sensible cache keys, correct exceptions for basket and login, and a considered approach to personalised content decide whether the caching truly works or creates subtle errors. A cache that serves the wrong thing is worse than no cache at all.
HTTP Caching
The Shopware HTTP Cache or Varnish as a reverse proxy caches fully rendered pages and serves them from cache without touching the Shopware application. Correct cache-control headers, cache invalidation strategies for product changes, and ESI for dynamic content like shopping baskets are the building blocks of a production-ready HTTP caching configuration.
Redis for Object Caching
Sessions, product data, category structures, and expensive database queries can be cached in Redis and are available in milliseconds on the next request. We configure Redis as the central cache store for Shopware, calibrate TTL values for different data types, and implement cache tags for granular invalidation.
CDN Integration
Product images, CSS, JavaScript, and other static assets don't need to be served from the origin server. A CDN serves them from edge servers worldwide, reducing latency for international users and relieving your origin server. We configure CDN setups with correct cache headers, automatic image optimisation, and geographic routing.
Cache Invalidation
Caching only works when changes are reliably propagated. We implement cache invalidation logic that selectively invalidates affected cache entries when products, prices, or inventory change — without flushing the entire cache and losing the performance benefit. Shopware events are used to trigger invalidations automatically.
Good to know
Multi-layer caching is necessary
HTTP caching, object caching, and CDN solve different performance problems at different levels of the stack. Only the combination delivers truly low load times — a single caching layer is not sufficient for complex e-commerce shops.
Cache invalidation is the hard problem
Setting up caching is easy. Ensuring customers always see current data after a price or inventory change is the actual challenge. Incorrect cache invalidation manifests as phantom inventory or stale prices — and costs trust.
CDN measurably relieves the origin server
When static assets are served via CDN, the majority of asset requests never reach the origin server. This reduces bandwidth costs, relieves the server infrastructure, and improves load times for users far from the server location.
Fast from anywhere
With us you're always at the cutting edge of technology and benefit directly from our developer expertise. Together we analyze your shop, identify key areas and develop tailor-made solutions. Your goals and expectations are at the center of our work.
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Your shop is built by developers who really understand the code. We pass nothing to subcontractors.
Shopware down to the detail
Architecture, API integration and performance from hundreds of project hours.
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Development, design and marketing come from one team that works without friction at the handoffs.
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We build measurably for conversion, load time and revenue.
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We stay on after launch and keep developing your shop continuously.
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